I agree with the sentiment, it is good to care, it is admirable and perhaps virtuous to care.

But it is not cool to care. Cool does mean detached, offhand, poised, aloof, unperturbed. That's why it's called "cool".

We don't need to hijack the term and pretend that it's cool to be enthusiastic and dorky and to talk too loudly when we get excited about something. The point is that those things are good even if they're not cool.