The Democratic Party and the DNC and all the affiliates are nothing more than tools for whatever vaguely left of american center interest group wants to use them.
There's no massive conspiracy to keep the Democrats Neoliberal, and if there is anything even similar to that, it's happening behind closed doors in Wall Street, not Washington.
They'll keep doing whatever they want without changing as long as people keep voting for him.
How long have you been involved in politics? I dont mean for that to sound demeaning. We've gone from Neoliberal democrats and Clinton gutting social welfare in the 90s to Socialists being integrated into the broader coalition, both parties have changed and will continue to change immensely over time. Ignoring that because you're upset about Bernie losing the primary in 2016 and 2020 and disconnecting completely from the party is just a ticket to irrelevance, and I say that as someone who worked on some of Bernie's first barnstorm events and both presidential campaigns.