> Public universities can kick you out for expressing your 1st amendment right based off of whatever bs reason they want to give just to expel you.

Yeah, and a company can fire you for being black if they give a bs excuse for it too. In both of these cases your rights are being violated and you can sue them for that. What's the alternative? I can't conceive of a system where it's impossible for your rights to be violated; giving legal recourse to the victim seems like the best we can do.