Because it’s an absurd statement, as in completely obviously not an example of ageism in tech.

Inevitably, there will be times in one’s life when another’s attempt at humor fails to amuse. When striken by such terrible tragedy, take heart, for you have the knowledge that it’s just your opinion, bro.

This is obvious

If nothing else, the smiley can be taken as a hint that it’s not serious.

I would have said “you could be a Linux maintainer,” but given this post, clearly Linux maintainers are less dense than you.