I've seen too many people say stuff like this then go on to blatantly discriminate to think people who say it are self-aware enough about unconscious biases to not discriminate. There is stuff everyone picks up along the way to becoming an adult that they didn't have any say in picking up, but it's there anyway, and it's not going to go away if you pretend like it's not there.

Personally, there's a part of me deep down that does want to discriminate, and I have to kick that part's ass any time it rears its ugly head. Even being part of several marginalized identities is no guard against it.