You can! I registered my first account on ml, and moved to sdf, with a third on world as a backup. You can open one on every instance if you want, or more as individual instance rules permit.

That’s why you can adjust swappiness, or designate a different high-endurance storage device for it.

They might have valid concerns, but when the writeup includes stuff like

the developer of Signal wants us all to beLIEve

it’s hard not to imagine the whole thing hand-painted on the side of a van.