What would you think if your boyfriend/girlfriend called someone else ugly?

We are fresh just started dating. Few days ago we were talking about profiles of people on tinder, and he showed me his. He was swiping through profiles and when he got one girl (not that ugly in my opinion, just bad posing and choosing of photos) he said jokingly "omg wtf is this ugly shit". I didn't say anything but it's stuck in my head. Red flag?
What would you think if your boyfriend/girlfriend called someone else ugly?
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