Pride is basically an analog to serotonin.
Can't live with it can't live without it sorta deal.
The consequence is resentment, but that is pretty much on par with "metabolizing" other negative emotions. Pride especially stings right?
Are some people more vain than others? Probably, but what are we even talking about when we're talking about vanity? What does that represent in the mind and physically really?
Behaviorally yes, psychoanalytically maybe? We can certainly construct a solid case against being prideful, but honestly, we have so many of the problems society had previously that we should really make sure we aren't just creating new problems by holding ourselves to vague standards.
Like, what is this fucking communist china where you're gonna drop my credit score?
I think that you should only really say something when you think such pride may hurt the person who is wielding it.