i know its kind of a stereotype but most of the fursuiter's i've seen are either a. loud and entitled or b. loveually hyperactive
i've definitely gotten wind of the stereotype that you're talking about, but it's a generalization and not a very accurate one
i'd guess the reason why you've seen them often is because being loud and obnoxious or obsessively loveual stands out among the rest. i've met a larger number of suiters who are on the quiet side and like attending cons in suits because it makes it easier to open up