The article makes no sense to me. The original verge article wants X off the app store. This article says Apple isn't powerful to confront Trump, seemingly as an excuse for why they're leaving X on the store, and then goes on to say that, uh, Apple should kick X off the store.
Not only do apple and Google have a huge amount of power, but all anyone wants is for X off the app store, and apparently even this author agrees they're powerful enough for that.
So i don't see how Cook and Pichai are, in fact, anything but cowards