If the state of Linux on desktops is anything to go by, Linux on smartphones will never be a success story either. I frequently regret buying a ThinkPad with AMD CPU/GPU after listening to the propaganda about open source GPU drivers. My laptop was basically a paperweight for a month until I downgraded linux-firmware package. No one wants to deal with this shit.
Curious, which ThinkPad was this? I got a T14s with AMD last year and it is one of best laptops I've used till date, and works with Linux out of the box, incl graphics, networking, USB-C docks etc.