We learned American Spanish when I was in school, no vosotros, no soft S, because we learned it from Cuban teachers. My kids got a mix but mostly, as you are saying, Spain Spanish. I think part of the reason is that Spain Spanish is one thing - canonical Spanish, yes? But in the Americas it’s varied, different in the US from Mexico, from Colombia, from Argentina, Costa Rica. Dialects.
We learned American Spanish when I was in school, no vosotros, no soft S, because we learned it from Cuban teachers. My kids got a mix but mostly, as you are saying, Spain Spanish. I think part of the reason is that Spain Spanish is one thing - canonical Spanish, yes? But in the Americas it’s varied, different in the US from Mexico, from Colombia, from Argentina, Costa Rica. Dialects.