The problem with conspiracy
theories is that they tend to be less useful as a way to sus out actual abuses of power and more useful as an ink blot test. People see what they
want to see, because humans are creatures of fiction that can't stand the thought of living in an objective reality where coincidences are just coincidences and the most boring explanation is probably true.
The World Economic Forum is just a bog-standard capitalist outfit. Their more out-there views are not particularly divorced from the rentier capitalism of the New Gilded Age. To be unambiguous about it, that means a heady mix of international megacorporations, uncensored corporate speech[0], copyright maximalism, and the Brussels Effect[1]. The Occam's Razor explanation for the WEF is that greedy corporations that want to maximize profits are going to be greedy and profit-maximizing - in other words, it's the "capitalist agenda".
But if you have particular kinds of brainworms[2], you're going to ignore the greed that you don't want to talk about and start making up reasons for their actions wholly unrelated to what they actually think. For example, if you think white people are being "replaced", then you'll look past the obvious explanation and into the fringes of the ink blots, and come back thinking that the WEF was created by the powerless to oppress the powerful with... power they don't have.
In cases where conspiracies have actually tried to discredit defectors, it usually fails. In fact, it fails so hard that it becomes a meme, like "Russia denies" or "I did not have sexual relations[3] with that woman". Most actual conspiracies are just not that well thought out[4] enough for this to work, while the people writing the conspiracy theories are actually overthinking things.
What actually kills conspiracy theories is conflicting information - i.e. the conspiracy theory not actually lining up with reality. There will always be people who still buy it, though, because conspiracy theories that are not true always substitute veracity with narrative salience. In fact, sometimes being widely known to be false benefits the conspiracy theory, because now you can work the debunking of obvious lies into your conspiracy narrative and make it more salient than ever. And there's no actual conspiracy on the debunking side, either. You are not being smeared by the media because they're all in on trying to hide the truth - remember, coordination leaves evidence. You are being smeared by the media because you are on the side of narrative fiction.
[0] Sometimes complained about under the banner of "money is not speech"
[1] The process by which treaties agreed to by rich countries tie the hands of non-party countries by way of tolerance.
[2] Typically the "50s red scare" strain of anticommunism
[3] it's only sex if the balls are touching - Bill Clinton
[4] Reason being that being in a position of power gives you symptoms of brain damage. In order to implement a successful conspiracy you need power, and that power will blunt your reasoning over time.