A horde of trailer-park visigoths can sack the Capitol and Republicans say "what's the big deal?" But let one guy show up in casual clothes and they lose their goddamn minds.
Because without the illusion of decorum putting a degree of separation between the common man and the senator, people might start to realize that the ones fucking them over are just as regular as the rest of us and maybe start to think about doing something about it.
So are we going to start eating with our bare hands? Taking showers when we feel like it? What's next? Clipping nails in the middle of the state of the union. Public perception and image still matters and it should matter. I don't give a shit what they say, putting a tie and a suit shouldn't be too hard.
I don't trust anyone with a suit and tie on. I'd venture to guess that's going to be the majority of the younger voting bloc as well.
Fetterman is wearing the uniform of his constituents and whether you like that or not doesn't really matter to Fetterman. I have a lot of respect for him because of that.