Hot take: Coffee rubs on meat are becoming a cliché in upscale restaurants.
I've noticed more chefs defaulting to coffee grounds for crusts without considering flavor balance. It often overpowers the protein instead of complementing it.
Seriously, it's not just lazy, it's a crutch for chefs who can't develop real depth of flavor. Coffee overpowers everything so they don't have to work with the meat's natural qualities. At this point, it's just signaling pretentiousness rather than skill.