Ok, to not be totally glib, I think my reaction to this is coming from a place where, if I made a big list of every single thing I want in a phone, "thinner" would be at the bottom.

I want more freedom to do what I want with my phone, primarily to stop it from spying on my activity to give information to advertisers. I would get a phone twice as thick as my current phone if I could just use it to tell advertisers and information brokers and monopolies to f-OFF with it. I do not care about this and I hate that thousands of man hours and millions of dollars are going into this shit.