I have been summoned
(ccing @mansnicks )
on most sites that I play on, 24/7 wolfchat rather than night only wolfchat is standard. This is not true everywhere, and plenty of places do it differently.
On some level this is a balance decision -- if wolves have 24/7 chat, they can talk/coordinate/etc., whereas if they don't have that it is much harder for them to do anything resembling that. This is especially true in games with no N0 planning phase; if wolves don't get to talk until night 1, and until then basically have to improvise a plan separately with no way to coordinate with each other, this obviously makes it harder for them.
This is also on some level (I suspect the level on which this change is being pushed) a balance decision. Many players find it kind of unenjoyable to roll scum and not be able to talk to or coordinate with their team; many players see 'being in wolfchat' as one of the fun parts about being a wolf. Neither of these is universal but both of these are common.
I don't think that either '24/7 wolfchat' or 'not that' should be enforced on a site level, in my opinion those are both decisions that can be left up to the individual host. If players don't want to play a game without 24/7 wolfchat, then this will kind of solve itself -- they just won't sign up for games that don't have it.
Personally I would probably not sign up for a game with nightchat only for wolves and only run games with 24/7 wolfchat.