Except sites deliberately break themselves if they can’t harvest your data. You can’t even browse reddit on Tor anymore.
Even merely using Fennec on my phone, I encounter shopping sites where I actually plan to spend money refuse to work because they can’t recognize “my device.” Or they refuse to sell me products where I live if I’m using a VPN. Creepy-ass behavior.
I suppose the only way out is through, and we should simply refuse to use sites that are designed in such a way, but it feels like a losing battle.