why dont android phones have a bios like computers and be able to load a generic arm linux iso or windows one,or be easily rooted?

https://lemmy.dbzer0.com/post/64812274

why dont android phones have a bios like computers and be able to load a generic arm linux iso or windows one,or be easily rooted? - Divisions by zero

why are phones so locked down unlike pcs and laptops?

I personally choose a phone that was easy to unlock and put e/os based on lineage on it. Its degoogled but i am pretty sure that at least the french police can get full access instantly. But at least the phone itself does not spy on me beyond the few unsafe apps i installed because they had no real alternatives