Here's Paul Sztorc's response from telegram:

Paul Sztorc (beware impostor accounts):
Yeah but this only applies to the people who have sat down with each other when the chain started

New people can't join -- or if they do they are trusting the other original people

Also doesn't solve the lopsided fee problem

And, as always, 51% hash can steal via censorship -- but no strength in numbers effect for BitVM 2wp

So I doubt people will use BitVM for 2wp