This is old news, it’s working for over 5 years now.
I think the WASM project diabloweb of DevilitionX has not been around for five years?
If you do a quick web search, you can find 5 years old reddit posts that link to the exact same github of d07RiV that is first mentioned in the article. So I suppose DevilitionX will be around for the same amount of time.
With geforce now(and other similar cloud gaming services), you can play all kinds of AAA games in your browser, including diablo 4.
now if this worked in mobile with a controller…