I’m just one data point, but when I tried Figma (admittedly many many years ago), I didn’t find it particularly performant. I remember being intrigued by the concept of vector networks (was that the name?) but being in the browser made it such an awful experience to use and so unreliable to shortcuts that I promptly abandoned it and never looked back.

I never communicated this to the team, but I doubt I was alone. All that is not to knock you down, I just wanted to share that being a proper native desktop app does matter to some people for practical reasons other than performance, even if you’re not aware of it.