I personally might not use a headphone jack or SD card slot very much, but for the market that a GrapheneOS phone would be targeting they seem like OBVIOUS things to include.
The crowd getting excited about this partnership is pretty much the same crowd that complains about features like those going away.
100% agreed. I agreed more with each paragraph.
Your last sentence hit on what I think is a contributing if not primary driving factor in the health crisis you described.
It's like the goal of modern society is to insulate us from the natural world and from learning subjects or doing tasks that we don't absolutely have to.
But we are critters that evolved on this planet just like the others. You can't just live a commoditized life that consists of work, car, screen, sleep, repeat and get the same fulfillment out of life as if you found the unique path that's optimized for your unique brain.
Not acknowledging that everything jacks with your head to SOME degree only prevents you from trying to defend yourself as best you can!
Over the past several years I have gone through a transition from living life the way I was supposed to, or that I thought I wanted to, to living according to what produces the best outputs from my brain. Once I have the lived experience of an undeniable improvement from some change, it might actually become a habit.