I think it is possible that the APY every 4 years bitcoin will go up and the miners usually get a lot of bitcoin because at that time a lot of transactions on bitcoin occur and I think this is a natural thing.
What is APY? I really don't understand what you mean by that, because logically, if Bitcoin continues to be mined, the number will automatically decrease and the longer Bitcoin will become increasingly rare if no one sells it anymore and most people just like to hold it.