The whole defining feature of conspiracy theories is that there is a cabal somewhere that pulls the strings. A smallish group of people with nefarious intentions. For Alex Jones these are „the globalists“, for David Icke more daringly „the lizard people“. The whole empirical evidence therefore often amounts to a smallish group of people popping up in different contexts, that can be pulled together into a story of purposeful action.
Because of the verbal IQ advantage jews are overrepresented at basically all higher echelons of decision making. Because the reason for the over representation cannot be mentioned in polite society, even the over representation cannot be mentioned in polite society. That makes them the perfect ingredient to conspiracy theories: „Another jew! That cannot possibly be a coincidence!“ Well, because it isn’t.
Both Alex Jones and David Icke run into the conspiracy theorists dilemma: If they do not want to increase the likelihood of getting cancelled considerably, they cannot connect the cabals to the number one choice of evil cabals – the jews. Of course their followers have no such compunction, as a look into youtube comments will make abundantly clear. Antisemitism is the sodium-glutamate of conspiracy theories – every conspiracy theory just works better if you add a little.