I find at least zooming in/out large project files to be much faster in Figma. Lack of good offline workflow sucks but the overall features and cross-compatibility means nearly everyone is moving to Figma.

Sketch isn’t bad software at all, but they are really losing out to the network effects of Figma. Design software isn’t like IDEs where everyone in an organisation can use their favourite one - orgs choose design tooling that is shared across the whole design team, and often used by the FE devs too to some degree.

I feel a little sorry for Sketch but if they are not going cross-platform, at this point the only thing Sketch can do to remain at least a little bit relevant is to develop features Figma doesn’t have, maybe some animation tools and scripting for more interactive prototypes, and find a niche in that.