Because Poker is a really interesting game involving strategy, chance probability and reading people? All stuff to teach kids

So is cribbage.

In the context of gambling. Without which, the game is meaningless.

And your point is?

Teaching kids about gambling is generally frowned upon for some reason.

Is it? Why? They are not supposed to gamble their lunch money and at that point - where is it different from Monopoly

Give them a beer while you are at it yeah?

What does the one thing to do with the other? Lemme guess - you are American, correct?

Wrong. If you need explaining why teaching children harmful adult behaviours is not a good idea, I can’t really help.

That said some stuff SHOULD be pretty much entirely withheld from minors, alcohol among them.

You are not trying to help anybody, you try to confirm you preconceptions. The dose makes the poison. Of course excessive gambling is harmful. Treated as a game it teaches judgement, restraint and resilience. Kids usually don‘t overdo games as adults do.