Although I am gradually acquiring more technical knowledge, I realize more and more that I still have a lot to learn. I didn't know that distinction you make. For me until now there was a distinction (in my mind):

-Custodial wallet: not good for your privacy.
-Non-custodial wallet: good for your privacy.

But I didn't know that difference between decentralized and centralized non-custodial wallets, so thanks for that.

In any case, I believe that very few people will use Bitcoin with maximum privacy.