I would call the liberals you are referring to neo-liberals or conservatives. The few liberals I met in real life and the many liberals I've met online are fiercely anti-fascist.

I think this Vox article gives a more historically accurate take on how defeating the Nazis was a team effort by the Allies. Capitalism was essential to defeat the Axis powers. By the logic in the first article, capitalism is therefore anti-fascist.

https://www.vox.com/2014/6/16/5814270/the-successful-70-year-campaign-to-convince-people-the-usa-and-not

The second article has this gem.

Liberals call themselves a variety of things, ranging from “democratic socialists” to “social democrats” to even “socialists”

I had the pleasure to chat with a socialist online briefly. They wanted to tear down US democracy with a socialist revolution. I am certain that socialist was not actually a liberal in disguise. Or a secret fascist for that matter.

I definitely see how liberal is used as a way to describe how everyone who is not a communist is actually a secret fascist.

The third article actually admits the group it's really talking about is neo-liberals, ie conservatives. The article claims capitalism and free market economies have to go, but doesn't explain what will replace them. The author claims he wants a true democracy, which we have in the US by the way, so some it sounds like he wants some form of social democracy. I also want social democracy in the US. Communist countries have demonstrated that their economies are too brittle to survive long term. Even China allows a certain amount of free market. Quite a lot according to this guy.

https://hbr.org/2021/05/americans-dont-know-how-capitalist-china-is#:~:text=What%20is%20it%20that%20Americans%20don%E2%80%99t%20understand%20about%20China%3F

The fourth article really seems to be highlighting the semantic difference in the use of the word liberal vs neo-liberal. As a related example, I really doubt the millions of people who voted against Trump, many of whom I'm sure self identify as liberal, are secretly fascists.

The issues in the US are a difference of progressives ideas versus conservative ideas. The conservative movement in the US is what is being co-opted by fascists. For example the Republican party is now controlled by fascists.

https://www.theguardian.com/commentisfree/2023/apr/15/the-modern-republican-party-fascism-robert-reich

On a related note, the Mises Caucus has already orchestrated a fascist take over of the libertarian party in the US. These libertarians in the US were always conservative libertarians. They already believed might makes right and that their freedoms should supersede other peoples' freedoms. So it doesn't really surprise me that this happened to them.

https://www.thenation.com/article/politics/libertarian-gop-alt-right/