I don’t even know if the guy is American, just anecdata from my Facebook feed
now hol' up
in English, we have a suffix -ist for a person who does something: machinist, pianist, flautist. In Italian, they instead use the suffixes -isto or -ista to mean the same thing (which suggests English got "ist" from Norman French)
what does this particular -ista do? stands at a bar, that's why they are bar-isti. What's a bar, in Italy? well, "bar" not an Italian word, they borrowed the word from English.
Kind of weird this became a meme, since Italians are stereotypically supposed to really care about good coffee. My best guess is that for many households, the Bialetti is their version of Mr Coffee that they fire up in the morning to get out of the house before work and don't have the time or inclination to care about how it tastes. If they want something fancy and delicious that's what the 50 cafes within walking distance are for. That or their following a sub-optimal family tradition for how to brew with it.
Anyway, I only watched the video once but from what I recall the only thing that seemed especially over the top was the trivet to buffer the heat of the stove.