One of the things that makes it hard to choose which technology you begin with is that small projects don't stay small, even if you thing they will. So the risk is I think "hey it's s small project, I'll whip it up in Django", and then of course in six months I'm cursing myself for not starting in React.
I think that part of it is just experience. You'll slowly learn to better predict which projects are likely to grow, especially in a way that needs a more expressive foundation.
I also think that the, "aw crap I have to re-write this from Django Templates to React" isn't exactly a bad thing. You've probably learned a ton about the problem you're solving by focusing on the problem directly in front of you[1] rather than trying to plan for the future problems that you don't quite understand yet. So when you tear it down to build the next iteration, the code you're replacing wasn't the valuable part.
[1] Not all projects are organic. But the ones that are, really benefit from a, "get this out in 2 weeks and learn what we don't yet know about it" rather than spending months trying to perfect some product that we're mostly just guessing at.
