The key difference is that workers have the conditions of capitalism forced upon them, which makes their participation in the capitalist system (including purchase of consumer goods like iphones and Starbucks) less than entirely voluntary.

Prager U, on the other hand, constantly argues for the continuation of capitalism, or even change towards even more cutthroat forms of capitalist competition. Loudly advocating for a system but acting against the principles you advocate is hypocritical. Wanting a different system while complying with the current one due to lack of choice is much less so.

To illustrate by grossly oversimplification: imagine you and a group of your friends go to see a movie together. You want to see <good movie> but they overwhelmingly vote for <Marvel Capeshit Ep MCXVI> so you go see the bad movie. After the movie, everyone thinks that it was dogshit and is complaining about it. You have much more of a right to be angry than they do because they chose the thing and you only went along with it to keep the peace.