Look, if you want to dismiss a study, do so

For someone constantly accusing others of not reading, you seem to have a lot of trouble reading. I'll leave it to the exercise to the reader (not you, obviously, lol) to find the sentence where I explicitly say that this doesn't necessarily invalidate the results.

brought anything but ad hominem against the authors.

Acknowledging the biases of the people doing research isn't an ad homienem attack. Would you be clamouring to defend studies about the dangers of smoking written by people with large interests in the tobacco industry? No?

You are having an extreme an emotional reaction to the presentation of fact.

Holy mother of based someone on this site who actually reads the fucking study

Most research is somewhere between: scientist has a belief on how something works and does studies that can provide evidence for or against it and competing hypotheses. Doesn't matter if it's super basic science about some obscure bacterial protein that has no known real world implications: often the scientists have a belief before doing the studies. There nothing wrong with that as long as you don't hide data and you are open to being wrong. Aelwero provided no evidence for their claim. If we just accept that "well maybe there lying", we would have to reject all science by that standard.

Of course independent groups should verify results from other studies. But it's boring, non-flashy work that makes enemies and doesn't interest funders. But we should work towards getting more funding to do this. We also should work towards a culture of reporting null data. Not reporting "no difference between groups" can result in a similar problem without anyone intentionally doing it (sorta like the jelly bean xkcd, but with 20 different groups doing the same experiment but only 1 publishes because they didn't know 19 group already tried and found no association and only they did by chance).