I am so old :(
I looked up “mogging” and I’d think “my assumptions about stuff are valid because I’m a lawyer and don’t know what you do” would count more as mogging than “that doesn’t quite sound right, this is a conversation about something specific and not your general cleverness” but I’ve got a Benny Hill archive to get through
Those are not assumptions on your interlocutor's part. You've embarrassed yourself quite badly, I'm afraid. I know you don't understand how, but that doesn't change the fact of it.