I am not spreading "FUD" you pompous buffoon, and I won't be providing any evidence, believe what you want, its no skin off my nose.
on second thoughts, sometimes people like you need to be told so chew on this..https://genhvac.com/bigger-isnt-better-comes-air-conditioners/#:~:text=Higher Utility Bills,it to shut off again.
or this https://www.oasiscooling.com/blog/why-an-oversized-air-conditioner-is-a-serious-problem/
but i do agree with your final sentence, wrong is indeed wrong