That's actually ahistorical, Bernie was fucked over in 2016 and was beating Hillary until superdelagates got involved. In 2020, Bernie beat Biden in most states that Biden beat Trump in, Biden only picked up steam when it came to red state primaries. The people want Bernie.

Did Bernie win, though? No. Again, superdelegates and careful design of the electoral process prevents anyone from actually rocking the boat.

Politics absolutely matters, elections at the federal level are loss prevention, and at the local level you can genuinely get Socialists into office. However, meaningful political change occurs when there's grassroots momentum, like the Civil Rights Movement and Black Panthers. Unionization is one of the best ways to force political change.

Please, feel free to continue mouthing off and putting words in my mouth, you can continue being a radlib and supporting the status quo like your life depends on it, unfortunately I'm not privledged enough to not advocate for meaningful change.