No, they won't be.
I've seen these "low belt tournaments" at the time UT was up and they were consisting of 13 players max with half of them being UT hosters' friends on alts. Static automated tournaments is enough for all the new players, there are now 15 of them.

Serversitting has been the only good thing that UT did until most of the members stopped giving a shit about it (why whine GMs now that they're not doing it eh?). It takes a lot of patience and it gets dull after a week. If someone from the current staff serversit at least once a week, everyone who cares about newcomers should be grateful for that.

Anyway, keeping UT or making GMs nurse the whitebelts won't have any significant effect as they cannot get to all the new players. There are already a few good tutorials in Steam which are way easier to reach, even they are more helpful than a bunch of people popping up on one of beginner rooms once a day (remember that we now have almost 70 of them, would you hire ~700 UT members to cover at least half of the time?).