Bonuses are tied into compensation. With your logic anyone making more than entry level employees should redistribute their paychecks, which doesn't help anything.

Again, I want to separate C-suite bonuses vs front line manager bonuses. If you're not an executive your bonus is part of your compensation and nowadays is a way for a corporation to withhold pay if performance KPIs aren't hit or the company doesn't do well. It's not "extra pay", it's a contingent part of your salary.