The fact that you are 100% serious with this take is why it is so good.
I think most people would say something like, "Police Academy was dumb, but enjoyable in a raunchy, silly 80s comedy sort of way. The sequel was inevitable and just OK. Then things went off the rails."
But you went all in and stayed with it through #4. That's awesome.
And now I'm digging into this and you could actually make an argument that the first 4 are all OK... And then Steve Guttenberg said he'd had enough and it all fell apart. I have to admit that I watched #4 a lot because it was on ALL OF THE TIME.