I could be entirely wrong, but here I go.
With postmarketOS and in recent years, people have worked hard to bring Linux to phones. One of the examples is OnePlus 6 - one maintainer worked hard to get it running. But here we are. It's not yet really in a daily-driving state where one can replace it, but for example, calling works.
So to answer your question, you could but would you be happy with this yet buggy state of Linux?
