Why? To me it seems pretty much standard operating procedure in skepticism to pay attention to idiots. James Randi, after all, paid attention to the claims of Uri Geller. This forum spent a great deal of time paying attention to the claims of Bigfoot enthusiasts, UFOlogists and 9/11 Truthers. There would be very little to talk about if we didn't.
Well, I suppose we could just talk about politics, but again, that usually involves a lot of talk about idiots as well.
So here we have a pair of charlatans, in my humble opinion, who have managed to convince vast numbers of people that they are Very Smart
TM, when many of their claims are around alt-meds, anti-vax, UFOs, and claims to having worked out a theory of physics that is ignored by academia. Why is it ignored? Because, according to the Weinstein Brothers, academia is itself a kind of conspiracy designed to suppress the truth.
The two of them have spent hours on the Joe Rogan Show spewing out their nonsense. I think just ignoring them is not a good idea. Or certainly no better an idea than ignoring anti-vaxxers in general. Some of us have noticed that their views have gone so mainstream that the current presidential administration is essentially a who's who of people that the Weinsteins themselves have been promoting, particularly Gabbard, RFK Jr, Jay Bhattacharya. In fact, I would almost go as far as to say that without Bret Weinstein, Trump would never have been re-elected. He was the one who sent Joe Rogan down the anti-vax rabbit hole, and he also organized a march on Washington that RFK Jr was the headline act for.