Not only is a modern phone impossible to open, everything is glued in. Even laptops are like this. I have even seen other manufacturers stop using underfill in their phones, just like apple. Probably to make broken phones useful as refurbs. This is leads to phones where chips come off easier (remember apples touch-ic issues and bend gate. That chip didn't have underfill, no proper soldering materials) and an increase in flexion damage.
A right to repair doesn't mean much if everything is glued and soldered into place anyway, and with everyone following apple I doubt anything will get better in that regard.