Well, there is not just Android & iOS - there are other Smartphone OS (such as Sailfish OS which I use on my daily device) & with PinePhone we can hopefully see mobile Linux distro explosion, like what happened on PCs in the past.

Basically, I think modern mobile hardware is fine, it's just the software from Google & Apple that makes it often unusable & out of user control.

Thankfully there are people working on that & I'm sure they are looking for contributors. :)