This whole saga is pretty sad really.
While replit isn't doing very much in wrapping these languages in a frontend (and something that is clearly straightforward to replicate), they are doing all the work that comes with scaling that to many users on the web (I guess that includes moderation).
They should have just been happy with that.
It takes more than just being able to run all the languages in sandboxes to compete - if you tried this, people would be mining bitcoin and hosting all sorts of awful stuff.
Really strange / insecure attitude.