Honestly, if the Dems go fill on Neo-liberal, then they deserve to lose. Look at how France is doing with Macron, low approvals and riots in the streets, I do not want that for America.
France has the highest labour taxes, the most regulated labour market, the highest tax burden in general and extremely generous welfare benefits. Until recently they also had insane capital taxes (with a lot of dumb loopholes though). It's very reasonable to assume that these factors contributed to the high unemployment and low economic growth in France. Obviously Macron could just sit back like the past few French presidents instead of going full ''neo-liberal'', but we've seen what that's led to. Macron is doing what is right and he shouldn't back down. It's really not comparable to Democrats blocking things like universal healthcare because Mark Penn tells them to (not that I support single-payer though).