I completely agree and feel what you feel. Like biden said in his speech on stuttering (definitely watch it if you haven’t) - he said stuttering is the only disability that is still made fun of. And this is just another way it’s being mocked, subtly. It’s not “not that deep”. The implication is that if someone were to stutter when making a powerful point about something then the point would decrease in value. That is the implication, full stop. People are ignorant and don’t think about what they say sometimes man, but don’t get too worked up over it and even blame these people because if you were to point it out to most of them, they would understand and feel embarrassed. It’s just a lack of awareness.