No their aim was a takedown of sub disciplines they don't like using pseudo-academic methods. At least, I kinda hope it was because, if this research is genuinely indicative of how these people conduct research – or think research should be conducted – then well, feck me, it says a lot about them.
I've done a brief check on the authors, none of whom seem to have any publication history or university affiliation, although Helen Pluckrose's academia.edu page is accessible and she publishes in a related field to mine. If the papers listed there weren't crafted for the study then I suspect she just is not a very good researcher.
If you wanted to demonstrate that a load of shite gets published (a problem that is probably genuine in every single academic discipline, especially in the niche journals that they got published in despite their bogus claims that they were all 'leading'), then there are ways to do it that don't make your findings absolutely meaningless.
Again, all this shows to me, really, is that these three don't understand what peer review is.