Isn't 5e a system to be easy made to be easily moded and subject to rulings by design after all ruling over rules is a core componentYou say that, but I don't know anybody who runs any system 100% by raw, even 5e
Joking aside, I don't really see big deal with grips and door opening? I mean, yeah, one of my players started to troll me about two handed weapon casting fiend until we noticed that you can actually cast somatic spells while having two handed weapon. Its kinda weird, but it seems to be mostly to give reason for "one hand free" character types to exist(such as saving hand free for shoving or tripping while having rapier)
But yeah, I... Don't really get what you mean with the middle sentence besides that its your personal opinions and I personally disagree with it and I've felt much more freedom playing and running 2e than running 1e?
Can you say the same about pathfinder 2e ? that house rule do not invalidate feats or mechanics?