I was the primary programmer on this web based 3D dungeon crawler: https://mkimball.itch.io/gift-of-fire

It's slow to load, and you'll get lag when you move around a bit, and this is due to slow shader compilation, which I wasn't able to avoid with stock Godot 3.5. You can't easily multithread your WebGL application (at least not without a bunch of caveats), so the audio glitches as well. Additionally, streaming a lot of content while providing a good user experience is an extra design and technical challenge compared to downloading a native app.

Every shipping game is a miracle - by doing WebGL instead of native, you are adding a bunch of additional challenges. And for what? Players are just as happy to download a native build.