Wow, so hostile. Have a nice day.

IMO there is no reason to be offended by being misgendered. Unless it’s obviously an attack.

Well as someone from an older generation I'd generally agree with you, a simple mistake to apolgize for, and not to be taken so negatively.

But it does seem that these days that type of logic does not hold sway, as people care very deeply about proper gender identification now, and see it as being disrespected if incorrectly gendered. So I try to always use the right gender, so no accidental disrespect is done.