I watched some of the Cardano guy, Chainlink guy, and the Vitalik ones. They know the space well, certainly better than me in a lot of respects, so I definitely learn from them. They talk their own books as they say but, again, they understand the space well even if they are willing to mislead people about the tradeoffs.
It's interesting studying their body language. It's obviously easy to get this stuff wrong but humans pick up on sincerity fairly well I think. The Chainlink guy IMO very sincere even if he's maybe predicting the future wrong. The Cardano guy IMO is so ambitious he's trending toward being a sociopath - I would not trust him in the least. One thing I noticed during the latest Vitalik interview is that he seems uncertain about the pending Ethereum upgrades - he kind of lost his confidence when he was speaking about it, like he knows its going to be way more difficult (if not impossible) to pull off in contrast to the marketing.