Not all politicians are like that. The Republican party has been very focused on that.
"All politicians bad" thinking damages the work of the many people fighting for a better and more just world. There are even politicians in conflict areas that give their lives trying to fight cartels or terrorist groups. "All are the same" is degrading for us all humans.
Biden voted to make same-sex marriage Illegal [1] and later for legalizing same-sex [2]. A bit interesting that his running mate neglected to legalize it and instead just didn't defend it in court (Imagine how people would talk if Trump refused to defend a law in court, lol!)
But yeah, some politicians like Bernie actually have been consistent their career while others like Ron Paul just make a big talk about their stances but then vote to inflate the deficit anyways.
I like Bernie too but he is nuts. He's a far left voice who is often quite rational, we need someone like him to bring things back towards the center, but I doubt he'd be a good president.
As European I see Bernie as center-right, but I guess it is a matter of perspective.
Maybe dump isnt really a racist, or a crystal rubbing brain worm yoga mom... but he sure tricked them into voting for him. He actually did more than most politicians and actually did each of them a tiny solid rather than just ignore them after winning too