Websites do care about the UA. They don’t care, at least most don’t care, about the User-Agent string. That is different.
About an element that gets rendered into native menu controls, I am not sure. I haven’t been following closely for the last two or three years. But that seems like a good candidate for a native element. 9 out 10 websites need it.
About an element that gets rendered into native menu controls, I am not sure. I haven’t been following closely for the last two or three years. But that seems like a good candidate for a native element. 9 out 10 websites need it.