I mean if they are trying to make someone else like me wear formal clothes, yeah I wouldn't take them seriously. I wouldn't work for a company which polices what I decide to wear like that.

But if an individual just wear one themselves by choice, it's silly to judge them for that choice. Interviewing is hard, maybe they feel more confident in a suit.

I feel company culture should be less about someone's personal style/clothing/hobbies than if someone, for example, berates and yells at fellow employees who make a mistake or talks calmly through issues without treating others like they are the problem.