The "paint-the-fence" analogy is spot-on, but AI can be the spotter rather than replacement - use it for scaffolding while deliberately practicing core patterns that strengthen your mental models.
As long as you understand the scaffolding and its implications, I think this is fine. Using AI for scaffolding has been the key thing for me. If I have some obscure idea I want to build up using Django, I braindump to the model what I want to build, and it spits out models, and what not.
Course, then there's lovable, which spits out the front-end I describe, which it is very impressively good at. I just want a starting point, then I get going, if I get stuck I'll ask clarifying questions. For side projects where I have limited time, LLMs are perfect for me.