@nprofile1q... @nprofile1q... @nprofile1q... Linux "classical" distros come from a position where the soft available to them are pre curated by the companies and or communities building them, so the need for such things are no so pressing.
Andorid distros face applications that mostly not curated (except for 3rd party repos like f-droid, which are also pre curated by the communities), so they have other threat models. Personally, I find them too extreme, but currently is the best option on phones.