So, the author claims that PE is a scam where PE firms profit at the expense of lenders. If this was true, you could easily check to see how well lenders have done, on average, lending to PE firms. The author has not done this.

You could also look at lawsuits between lenders and PE firms (there have been a few interesting ones, I believe), and see how they've ended up. You could also look at the terms of loan covenants (agreements between lenders and borrowers intended to stop this precise sort of thing), and how their wording has changed during the rise of PE firms, or after high profile PE failures. The author hasn't done this either. You could also look at what sort of rates PE firms pay, or what difficulty they have raising loans, or if PE firms which have failed to repay loans have faced any consequences compared to ones which have not, but...well, you can probably guess.

In short, the author has identified a somewhat interesting topic (is there something systematically wrong with the loans PE firms take out with large lenders, and if so, why is the legal system and/or financial system not dealing with it as you would expect?), but failed to provide any information about any part of it, presumably because research is hard, and writing tweets is easy.

If you know so little about your topic, you're not really going to be able to provide any value when you try and explain it to others.