AITAH for basically calling my mother's husband an idiot

I (f 21) was on FaceTime with my mom, while she and her husband (aka H) were getting ready for bed. H began pretending like he had left my dog outside in the cold, as soon as he started joking about it, I opened find my on my MacBook cause I have an Airtag on my dog. He kept saying how he can't find her and how she might be outside. I then said, "I have her location; she's clearly inside." He then said genuinely, "Wow, you're really smart!" Then I said, " Am I smart or are you just average?" Like he's known for years that I can track her. For context, I don't like him whatsoever; he's a cheater, emotional abuser, and complete creep, especially for young girls.