Far-right extremists flee from Telegram to SimpleX over privacy features

Why should these people trust this particular app? Especially on its "doesn't store messages" claim.

And if SimpleX becomes the Mos Eisley of internet messaging, won't the hosting government just shut it down? Or turn it into an extremist monitoring.

EDIT: I haven't looked into SimpleX - can anyone who has, please comment on whether they trust the platform?

Where did the far-left extremists flee to?