People are using it pretty regularly. I wouldn't say it's like this end all be all technology that all company's are using or something. But yea it's a viable option, probably the main feature there is, if you target wasm your code will run the same on any machine that can run a modern browser.

Give it some time, wasm, webgpu/wgpu, etc will be more and more "normal". For now they are both in use, but kind of niche.