Websites can't tell, but lots of companies don't provide equivalent functionality via website. I know I can't upload check images for remote deposit unless I use the native banking app.
What irked me is sometime app developers are abusing it without asking themself "Does this app really need to check for rooted phones at all?"
I'm okay if banks apps are using that. But why does fast foods apps need to use that? Most people that I know are paying with cash when they order foods online (and you can't hack paper money with rooted android phones).
[1] https://developer.android.com/training/safetynet/attestation
like having to rotate your password every 3 weeks and requiring 4 special characters/...
Perhaps “food delivery” means pizza to you, but there are many places where it also includes thousand dollar bottles of wine.
Fraud becomes significantly less profitable and more of a pain in the ass if you need to set up a new phone for each account.
I'm not okay with it, to be honest. It's my money, and I trust a rooted LineageOS with it much more than I trust the default firmware of most phones. Besides, my bank lets you do the same operations from their website that you can do with the app, so in my case it's pure inconvenience, not security.