It's complex to even decide what to jump to, then there's setting up the environment, learning text editing and syntax, usually much more complex (and completely unfamiliar) graphics libraries, etc. And then they can't share projects so easily and aim to be curated, etc.

I like lua and love2d as the next step, as it's much simpler and cleaner than kitchen-sink Python (don't get me started on significant-whitespace), but it's still a big jump from Scratch. I wish there was a Thonny for lua though.