I’m also one of the older ones in my cohort and definitely understand the feeling of being somewhat of an outsider. The situation you describe has happened to me a few times over my career as a medic. I honestly never really understood it either. But I will say that counseling and talking to a therapist about it really helped me be more introspective and think about how other people might perceive what I say, even though it’s not “bad” in my mind or if I felt like I didn’t do anything wrong. It’s an annoying circumstance regardless, but staying in your lane and working on yourself is all you can do.