This entire post can be summed up as "I haven't used Sketch for a long time and ...

snemvalts · on Oct 28, 2020

Sketch Cloud seems very similar to Zeplin, which still has limits to collaboration compared to Figma.

Also, the focus still seems to be on the Mac app, everything goes through that. That's still a big hurdle when it comes to collaboration.

gregd · on Oct 28, 2020

Not the point.

What is the point is that Sketch didn't have the functionality they needed at the time they needed it, so they migrated to Figma.