Yes. I've been doing Javascript + HTML games with my 9yo nephew every now and then, and the complexity of the environment as a whole is incredibly discouraging. Sure, he gets assignment, functions, conditionals and other basics. But the interface between the logic and the presentation is just so incredibly abstract that getting from those basics to anything interesting is way too hard.

I've been thinking of switching over to some other environment the next time we do that. The immediacy and integration into an environment he already uses every day are compelling advantages, and it'll be a shame to lose them. But it does feel like the downsides easily outweigh the benefits.