Why is it that people look at the MO people who don’t follow the rules and claim they represent the “true” MO, but chareidim who don’t follow the rules are deemed the exceptions?
Probably because
a) of the numbers (percentages)
b) being Modern Orthodox is frequently cited as the excuse for laxity in halacha.
It is not right for any individual to be judged negatively based on these factors, but unfortunately, it happens.