This is becoming a recurring issue; plenty of innovation being put in new and faster tooling to replace the JS-based daily drivers we've had for the past decade+, but there's a huge ecosystem of 3rd party addons to those now which is slowing adoption down; I'm also thinking of Prettier/ESLint vs Biome, the only thing stopping us from going full Biome is that we need some ESLint plugins.
That said, it's getting better; as another commenter pointed out, LSP is one of the best things to happen to this space. There should be a standard for editor plugins, too.
> Not Zed's fault
Zed only supports language extensions, so it is in part responsible. If you're using embedded rust then PlatformIO isn't really needed; probe-rs is extremely capable and straightforward.
I'm guessing that this extension support problem will continue to be a barrier to uptake for a while.