I like espressos (especially mochas) but they take a bit of work to prepare a single cup. With drip brew, I can do very little and get unhealthy amounts of caffeination into my corpse. Also, I pour ungodly amounts of creamer into my coffee. That Mason jar is quite literally half coffee half creamer.
As someone who almost exclusively drinks straight espresso I see nothing wrong with the pic in the post. They seem to be enjoying themselves so who gives a shit? Like, seriously. I might not like it personally, but I can guarantee they’d hate what I drink. We should all just drink what we enjoy.