My first cocktail out of a can was at the Freehand Hotel in nyc when it is opened - I had never seen a canned cocktail before that. It was similar to an old fashioned — tasted fantastic! I can’t tell you how many awful old fashioneds I’ve had made by bartenders who didn’t know better. Wish these cans were more broadly available.
I just looked it up, and seems there are a lot more choices these days.
Also some of the airlines carry canned cocktails that are pretty good.
There’s something to be said for someone who knows how to, mixing your drink, and someone else who doesn’t, just pouring it.