Frankly, I feel like those reasons are pretty weak. Most of those questions get asked anyway, and all are either the result of people not reading patch notes, or the leaker not bothering to include the patch notes.
As for the patch notes being long - Just put them in different quotes? Omit them, or just point out they're available elsewhere. Forgo archiving the stable version entirely, and put up a message saying that these are leaked in-development builds - like the site (used to?) do for some devs, where they said (to paraphrase) "We're still participating here despite the piracy, please support us on Patreon or whatever". Could think of a bunch of ways around it.
I'm doubtful this will happen, as chatter from other threads says they don't do archival versions (even for stuff where content has diverged somewhat significantly - even though I've seen some topics today that have, for example, fan-translations kept listed alongside official kagura ones that came later). But that it might be being looked into as a wider feature or something.