
you can have more than one attachment style! like someone may be generally avoidant but have an anxious attachment with one specific person in their life. as someone who's avoidant if I were feeling rejected I probably wouldn't have texted at all and might've lightly ghosted, so I agree with #1 this reads as anxious attachment and also a lot of immaturity
I mean he was pretty rude to you over what seems like an honest mistake. someone being anxious doesn't stop them from an asshole and it's not your responsibility to try to ease his anxiety when he can't even communicate his fears in a healthy way. so obviously it's totally up to you! but I would maybe wait on an apology first