I have pretty much the same outlook as you have described, so it's notable that we disagree at least a bit on this point of memorization. I think this is my fault as I misunderstood the GP a bit in my reply. But I would suggest in some ways that practice is different to memorization in some interesting ways. Memorizing a manual on motorcycle riding wouldn't make you a good rider if you have never ridden a bike, and you can become a better rider without it, but it would prepare you for the topics involved and you would likely be far more effective at absorbing the learning from the practice having read the manual.

In other instances memorization is a foundational requirement, like language learning. Can't leanr a word if you don't know the alphabet, for example. In that sense practice only serves to reinforce the memorization it is the memory that is most important to being effective in that case.