I didn't realize that I'd posted that directly to the Underhusen area...I mean, technically I have the right to, but I usually post to the Citizens Platform instead. But since I'm here...
I don't agree with your interpretation of the section, but if I did I would say that's even reason that it needs to be fixed via constitutional amendment. The idea that the Storting (or any person or group really) can restrict who can vote in elections and stand for constitutional offices is dangerous...technically, that means the Storting could restrict candidacy for just about any reason. For example, around the time of your censure, there was a proposal put out (since deleted) that would have barred you from standing for Underhusen. It was explained that it was unconstitutional and the idea was quickly dropped, but if it's not unconstitutional...well, you see the can of worms that can open.
Obviously, the intent was to allow all Citizens the opportunity to take part in the legislature, restricted only by the selection mechanisms of each chamber (elections for the Underhusen, appointments for the Overhusen). It was an oversight that there's nothing that restricts Citizens from being in both chambers at the same time, and that should be corrected in the Fundamental Laws. If there truly is a belief that the Storting can further restrict who can stand and vote for Underhusen elections, then I think that should be corrected in the Fundamental Laws as well.
I also don't typically post to UH forums, except for Librarian-related matters, but since this is about reading what the law (quite unambiguously, IMO) says, and the discussion is already here, I think I'll also make an exception.
At first I was also going to raise a concern about the constitutionality of this proposal, but after going back and reading the Fundamental Laws, I think it's quite clear that Chanku is in the right that everything in is legal and proper.
On the qualifications for UH elections specifically and in elections in general, the Fundamental Laws only say the following:
2. The Underhusen shall be comprised of no less than four and no more than seven Skrifa elected by the Citizens of Wintreath.
That is, we have here that all citizens can vote, but there is nothing here that says that all citizens can stand for election.
1. Only Citizens of Wintreath shall be eligible to vote in elections, stand for elected office, or assume any elected office. The Monarch may not stand for or assume any elected office.
This is very clearly a
restriction on eligibility. It says that
only citizens are eligible for any office (i.e., non-citizens are ineligible for all offices), not that citizens are
always eligible to run for any office. I really don't see how you can misinterpret this, the language here is unambiguous.
7. Citizens shall have the right to stand for any elected government offices for which they qualify and to vote in any regional elections.
The key here is "for which they qualify." The Fundamental Laws clearly makes provisions, in general, for possible restrictions on elected positions (and as noted earlier, does not comment on restrictions, or lack thereof, for the Underhusen specifically).
The interesting thing here is that this is argument here is also one of the legal arguments for the constitutionality of Thane elections. (The other semi-valid one IMO, and one necessary to institute voting restrictions, is to have some sort of disclaimer saying that Thane elections aren't actually elections and are actually a poll. But since that has never been done—the Monarchy has always called them elections—and especially now that voting restrictions are gone, I think that by far the stronger argument is to just point at the "for which they qualify" clause.) The Riksrad is allowed to arbitrarily restrict who can stand for its elections because the Fundamental Laws not only doesn't say it's not allowed, but actually makes a specific exception for it. There is, similarly, nothing stopping the Storting from making restrictions on who can run for Underhusen.
Perhaps the intent was always to allow all citizens to stand for UH elections (which, since there are currently no restrictions in place, is indeed the case right now), and perhaps this was an oversight to not specifically open the UH to all citizens, and thus legally allow the Storting to change such things on its own. I don't know and don't particularly care tbh (edit: this is because I generally trust that the UH will act in good faith and that the OH will act as a check; the Storting already has wide power to unilaterally revoke citizenship and declare PnG, so having the ability to restrict UH eligibility, even if that power could theoretically be used on individuals, wouldn't be much of a stretch). But as it currently stands, I think it's pretty clear in the law that all of this is perfectly legal.