That website is not a quality source of information. Media Bias/Fact Check rates it as questionable, low quality, and far to the right: https://mediabiasfactcheck.com/here-is-the-evidence/
Please don't take the above argument too seriously, my point is that so many of the fact check orgs are riddled with logical fallacies. In this case we have guilt by association, ad hominem, argument from authority, and appeal to motive.
I think a fact check system that did not rely on logical fallacy would be quite useful, however I have yet to find one.