On the one hand, yes, you're right.
On the other hand -- the American right is going to always brand their opponent "socialist", because it fires up their base. Biden, who is, by record, by statements, by all appearances, just another neolib centrist, was called a "socialist" who would "destroy the suburbs" by the GOP attack dog ads.
More or less, political ads and messaging is so completely detached from reality at this point, that maybe all that matters in terms of moving public opinion is Overton Window shifts? If that's really true, it means the only weapon the Dems have left, is to start using the same super extreme rhetoric of the right. ("YES, we ARE coming to take your guns. YES, we ARE going to tax you more to provide healthcare to people who make too little money to pay taxes! YES, we ARE going to require that every K-12 child attend one Gay Wedding as part of their education! YES, we ARE going to collect old stupid dogmatic religious texts and have big book burning parties. GAY BIBLE BURNING FOR ALL!")
This might rile up a certain amount of the younger liberal base, but it would completely lose old centrists, who don't know what a meme or an Overton Window shift is.
Biden won by threading a needle and pulling those old centrists. I am not confident Bernie would have been able to even though ultimately he's another Old White Guy Millionaire, and so the AOCs of the party are definitely fighting over table scraps, policy wise.
I think we're headed for Russia style oligarchy here, more or less. I don't really know if it's avoidable at this point, so I am mostly focused on trying to figure out what I need to do to give my kid a path to go to college in some Better Place and then never come back unless they want to for some horrible reason.