That's assuming it is a "project" to "get off the ground" in the first place. What gave you the impression that this was something the author was going to try and take commercial? I never got that impression.
> It's a fair point that several other competitors copy the UI and I'm not suggesting this is illegal or disallowed
But you are suggesting it was that way around. I didn't quite see that either; on the contrary, I got a kind of distinct impression that some of these other projects predate Replit, including its UI design.