But Apple is forcing devs to include Apple ID and that's what's wrong here. They could have made it optional. Given how Apple users can be it likely would have ended up being in demand and devs would have included it out of their free will
There is basically no benefit to app developer in including it. It is more work, and you may get only an anonymised address. However, there is massive benefit to actual users.
Apple decided to prioritise users over developers here.
Trust me, I say this as a developer, if there is any indication that I am losing out on users because I don't have Apple ID, I will make sure to add it asap. That is pretty much the reason why I first included FB and Google. I first only had Google, then some people aksed for FB. The natural course would have been that then some other guys ask for Apple and I add it. But Apple decided to abuse its position and force it on us developers