I got in touch and received this response:
Hi Derik,
There are no current plans for doing something similar to Nintendo Web Framework for the Switch. We do however support Unity, MonoGame and Unreal.
Thanks,
SDSG
Other developers are saying that it is because of HTML5, open loopholes for homebrews.
They are only accepting games made by companies (the name Indie is only in the word).
I hope they make a browser safe as fast as possible. While there is no HTML5 games.