Supplements aren't homeopathy. The research done on then and linked to on examine is scientific research. It's just not great scientific research, similar to the entire field of psychology.
Also "supplements work really well" is a very different argument than this is the best website on supplement research.
There is not a single person in this thread of 100's who can name a single source of better information on supplements.
How would you prove that a psychology text book was the best even if it was so obviously the case that anyone who had ever read multiple psychology textbooks agreed with you. And everyone who disagreed with you had never more than a skimmed one?
I'd say it's unprovable and that you should just accept that you cannot prove your claim. After all, you don't know every [X] and just this moment a new [X] could've been published, which is better than the one you claim to be the best.
Just change your scope to something provable if you want your claims to be believed by sceptics. For example "[X] is the best that I know." would work.
My use of the word prove shouldn't be read as the mathematical method for establishing proofs. But the conversational use of the word prove. As in what evidence would you like to convince you of a claim. Not the rigor of a mathematical proof but to the rigor of "convince me this is more likely than the alternative."
There are two competing claims "examine is the best supplement website online"(examiners) vs "there exists a better supplement supplement website online".(otherers) One of these is true and the other is false.
While lots of "examiners" have argued and provided evidence, but the only argument brought by the "otherers" is they they don't need to bring any evidence.
..which they don't. Burden of proof doesn't lie with them. They also never made any other claim, like you suggest. My takeaway from this whole discussion thread is that the site is sketchy. It might not be, but that's my impression as someone who hasn't heard of the site before. As I don't care for the topic the site covers either, I won't bother researching this myself and will leave it at that.
I can see that, but those of us interested in the topic have a lot of respect for examine. They tried very hard to make sure their incentivizes align with the readers (by selling subscriptions) when most supplement companies go for the far easier monetization strategy of selling or promoting supplements. They've worked with lots of great scientists and experts on nutrition. The quality of information on the website is high by any standard but especially high for the supplement industry which is filled with a toxic mix of fraud and ignorance.
Also "supplements work really well" is a very different argument than this is the best website on supplement research.
There is not a single person in this thread of 100's who can name a single source of better information on supplements.
How would you prove that a psychology text book was the best even if it was so obviously the case that anyone who had ever read multiple psychology textbooks agreed with you. And everyone who disagreed with you had never more than a skimmed one?