On the one hand…I made the best money ever in dives serving beer, shots, and the occasional blender drink...back in the day.
Still, I’d do it in a minute if I was considering bartending now and I hoped for a position in a nice spot. These days, in Ontario at least, you’re required to have ‘Smart Serve’ certification anyway, no matter where you work.
Knowing the difference between a rock glass and a highball etc., and when to use each won’t hurt, and some of the nicer places are
looking for professional bartenders. The right personality AND knowledge/certification could give you an edge.