So who’s this Jack Mallers dude and why does he hate Ethereum and the other Alts ?

I’m scrolling through YT and watched a Anthony Pompliano video and watched this guy called Jack mallers talk shit about all the alts! Like who this man and why is he so bearish towards alts ? I already can tell you that I’m not a fan of that guy! Ethereum is going to melt faces no matter what that dude saids! 🙌🏾💎📈