The reason I believe the web experience is inferior is because companies put more resources into apps at the expense of the web.
Apps break often. They need a lot of support. Everything must be constantly updated. You never know when Samsung or Apple will push an update that breaks things because of some esoteric policy shift or setting change.
But the web? If you do it right, maintenence is much easier. If things do break: users can try different browsers or devices to get around instead of being bricked.
I can't be the only one who _never _ updates software on my phone until I absolutely have to. Everything is so brittle. I'm sick of being gaslit that apps make that better. Despite it's own horrible implementations, the web is far more stable.