It’s not really a dig on the age and the custom of the US, but a dig on the incredulity with which the system that has been in place for tons of generations in Spain was presented by the commenter. Let me rephrase it, “the custom is older than the US, don’t talk about it as if it were an alien concept”.
Eh weird dig considering a lot of other European countries do it that way. It’s not just the US or Canada.
It’s not really a dig on the age and the custom of the US, but a dig on the incredulity with which the system that has been in place for tons of generations in Spain was presented by the commenter. Let me rephrase it, “the custom is older than the US, don’t talk about it as if it were an alien concept”.