You keep repeating the same lie as if the frequency validates it
Sanders/Warrens plan eliminates premiums, copays, and deductibles. So while middle class taxes will go up slightly, which they both admit, the overall out of pocket amount will decrease for the overwhelming majority of Americans. You have no data or evidence that backs up the lie that their plans as outlined add "HUGE" increases in taxes on the middle class. That's right wing/democratic establishment propaganda perpetuated by those who oppose universal healthcare. Multiple scientific studies put medicare for all at substantially less in cost than the affordable care act, and it polls better, garnering overwhelming support among Democrats and pluralities among Independents and Republicans.
Both Biden and Buttigieg accept political bribes from the pharmaceutical and insurance industries, they have a vested interest in promoting the same sort of anti-universal healthcare propaganda