I agree with a single exception.
I very much think that a modest introduction to deeper, more conceptual mathematics is a very good thing.
The trouble with defending this is that it's very hard to point directly to immediate, directly practical applications for the literal material you are learning.
But that doesn't mean it's not important.
It teaches about a way of thinking conceptually and abstractly.
And makes people aware, at a very young age, of this style of analytical, logically rigorous investigation.
It's fundamental to the vital task of introducing the idea of intellectualism to people at a young age.