Sometimes some people have considered themselves to have done planning, but in fact they have not. At least that's what I felt when I first got to know this space. It wasn't planning but it came from emotions that were formed because they wanted to get profit quickly.
Facing something like this, honestly I have to have a level of self-awareness, because in the end, self-evaluation becomes a very important thing.
I completely get the point you’re trying to make, but then again, I still believe that having a solid plan is very crucial, yes self evaluation is also very important as this also helps you to revisit your initial plans and possibly make some necessary improvements and readjustments in order to make it more effective.
Of course no one can actually plan enough, because you likely do not know what the future holds, but then again you can’t just leave everything to happen on its own, sometimes you make things happen too, and how can you do that when you don’t have a target?
It’s true one cannot plan enough, but one should at least attempt to, then as you proceed, you can do some self evaluations and possibly revisit those plans an put it in a more better shape.