You'd be surprised. Obsidian, slack, Spotify, figma etc don't usually get panned for lack of performance, and those aren't even very light weight. As wasm apps mature, it will only get harder to justify maintaining 5 different native apps instead of a single cross platform one
Slack and Spotify really suck. I can't judge Obsidian and Figma, I don't use them.
The one example I know where they seem to have done a good job (at least in the beginning) is VScode, and even there it's not great. It's just not terrible. Put the same effort into a native app and it will be great.
Not being unusably horrible in terms of performance and being required to do something I need to do doesn't mean I enjoy or even tolerate your JavaScript app, bro.
I'd switch over to the 16-bit VB4 form version as soon as available.