The issue really is how do you carry your phone? Purse? Okay. But if you carry your phone in pant pockets, no way the current generation of phones is comfortable. Even the "small" base iPhone is thicker than ever. Too thick. Put a case on it: even thicker.
If phones were the size of--and a replacement for--wallets, that would be one thing. But they're not, despite the Apple Pay thinking that the only thing that goes in wallets is a card or two. Nonsense. In Europe it's even worse: Europeans typically travel with a wallet full of coins, cards, bills, etc. That's one pocket, taken up fully by a wallet stuffed to the brim. No room in that pocket for anything else.
So what we have in our pockets these days is wallet, keys, airpods, and phone, maybe coins (if in America), and more, and that's just too much. The size and thickness of these phones make it way, way too much.
What Apple needs to do is start selling iPhone clothes.
People who like the Apple Watch often boast of their ability to leave the damn phone behind for a bit. That should tell you all you need. The iPhones have become a burden, and that's because they're too big, too heavy, too thick.