imagine just exporting the engine into HTML so then people can use it in the browser XD
Probably because people are too busy to grant the such a substantial wish for somebody who probably won't even appreciate it. If you want it so bad, you'll just have to port it yourself, commission somebody to port it, otherwise you'll just be patient to see if it ever happens. Whatever path you choose, make sure to show a little damn respect. Until then, you can use it on the devices it has been compiled for.