Thank you. I have a couple like that and didn’t know how confident to be with replicating
It seems Apple is fine with adblocking by default for web content, but inconsistently as with youtube. Hard to predict what's risky to invest dev time into
Apparently they don't like when your app does something in a way that breaks ToS or EULA, even if they are not worth the pixels they are written on. Apple being the trillion dollar company it is, is naturally averse to the legal risk posed by having a ToS-breaking app on their store. This is why having a single company controlling your entire device is bad -- they do what's best for them, rather than whatever you might happen to want.
I'm not an expert on Apple's rules but my understanding is the download thing is circumvention of the terms under which Youtube licenses/re-licenses content so it's treated fairly strictly.
Then why do they allow other ad-blocking products or browsers that block ads by default? I don't understand the consistency of their position except that YouTube has a powerful lobby