My opinion is that, like marxism/leftism generally, anyone who still cleaves to such a demonstrably destructive, so-called ideology into adulthood is simply weak-minded.
Your opinion tells a lot about you.
Assuming that you are from the USA you should know that the line between left and right politics is shifted real far to the right in the USA.
In all (or at least all that I can think of) western democracies the Democrats in the USA would be considered centre right leaning conservatives.
In the USA over the past 40 odd years socialism, liberalism and leftism have become dirty words. The subject of a long running smear campaign to equate those words, in the minds of the public, with extreme left wing views (i.e communism)
Communism is bad, we all agree on that, but "socialism" outside of the USA has a totally different meaning. You can't even have a discussion in the US about socialised healthcare without the connotations of Americans perceived meaning of "socialism" completely poisoning the well.
Recently (I think it started around the time Obama got into office) US politics has got hyper partisan. The GOP decided back then to oppose everything Obama did on general principle. The Tea Party wing got more vocal and more powerful and because politics in America is all about winning votes to the detriment of all else, hyper partisan is the new normal. The same is happening elsewhere in the world to a lesser degree too.
Xenophobic, tribal, fear stoked politics gets headlines and media coverage and votes. (It's all about the votes) This emboldens previously disenfranchised racists and bigots and more extreme right wingers, who now also have the ability to spread their style of message further and wider thanks to social media and here we are today. The USA has Trump, the UK has Farage, France has le Pen etc etc
This is a site for critical thinking and skepticism. Generally we should not believe a thing because we are told that it is so. We should think critically about a thing and question it and weigh up evidence.
Life is rarely black and white. I'd suggest that instead of thinking along with the tribe, evaluate individual policies and ideas. Critically examine policies suggested by the "other" party. How would you feel about them if they'd been proposed by "your" party instead. Do the same with ideas from "your" party.
Going along with your tribe, only getting information from sources that support your tribe, and repeating their talking points without thinking about them first. I'd suggest that
that is weak minded.