I'm a little disturbed that most of the answers in the second part of that poll suggest that the OP thinks that a beta is for the sake of the players.
Betas are for the DEVELOPERS, to help them find and fix bugs and other technical issues. That's why it's not up to us to decide whether one is "needed" or not. That is entirely up to them.
Early Access is for the players, although chances are there will be bugs caught and fixed during that period too
That's a process which will never end, including after release.
BTW, there is no reason to believe that there is NOT beta testing going on right now. Just because YOU are not currently in a beta test doesn't mean NOBODY is
Of course they are testing continuously through this period, certainly internally, maybe also externally with a smaller group.