Destroy that and there is no value to Twitter. Alternatives will grow & flourish & the chapter of greatness & success will close.
I don't see how you defend such a small view, of limitation & constraint & denial.
I think you seriously overestimate how easily people change. Likely, because you aren't afraid of it. Most are and would pay to keep from having to do it; especially if you incentivize it with an improved experience.
I'd agree people will switch to free platforms if too many changes take place at once as it would basically be the same thing as finding something new. I.E. Payments + Verification + Everything X whatever app crap. etc.