And Soviet communism was... better how? Just as (if not more) destructive to the environment, and their "billionaires" were called "party members" instead. What an improvement! Now they can jail/deport political dissenters without even having to pretend to hold a fair trial.

Now of course this is where communists usually go No True Scotsman, but consider for just ONE MOMENT that the concept of wealth inequality is not, in fact, unique to capitalism. Any economic system is vulnerable to greed. And that the countries with arguably the strongest social welfare, highest human development, etc. are... the Nordics. Hardly capitalist, hardly hellholes.

This is why people say communists are angsty teenagers. Capitalism is a deeply flawed system, but all of what you just pointed to is, in fact, not unique to capitalism. That's just Americana. Pointing to the U.S. as a reason why "capitalism bad" is just as silly as pointing to N.K. as a reason why "communism bad".
Typical American with a viewpoint so narrow you can't see further than your nose. I've had lots of interesting discussions with French communists, and I agree with some of their viewpoints, but to start with you have to realize that capitalism is not the root of ALL evil, only of some specific systemic issues, which are only a small part of what's wrong with the US.