As I have said, this is a problem with specific TL;DRs not the general concept of them. (It is still a relevant concern, but it isn't sufficient reason to disregard them completely.)
Also, I generally use TL;DRs to decide WHAT to read, I don't use them as my source of information. So I would have disregarded the TL;DRs incorrect conclusion and read the article for myself (which I did).
In this case, the TL;DR parrots the (false) conclusion from the article, so if you stopped here, you now have false facts in your brain.