Comment by thaumasiotes

2 years ago

Only option 1 is something that users, who are the people who decide what user-agent to send, might care about. And as you yourself point out, it doesn't happen.

I'm pretty sure that users care that websites can fix bugs affecting their browser. In fact option 1 is very difficult to actually implement when you can't figure out which browser is having problems in the first place.

Why do you think users wouldn't care about sites diagnosing problems that are making pages fail to load (#2) or sites testing the site on the browser that the user uses (#3)?