The answer will be "no" for most users, but truth is that in reality, most parents who gamble teach their kids indirectly to gamble without knowing, how
This is true,but some parents are more responsible than others.
I don't have kids,but if I had kids,I would never teach them anything about gambling.
Kids have underdeveloped personality.They are too vulnerable to different kinds of addictions.
If you say to them that something is forbidden,they would want that "forbidden fruit" even more.
The only solution to this is to not give any money to your children(except for food).
They can gamble,but only with their own money and only after they are old enough.
I don't know about a flood of teenage gamblers.I don't know where did you find such data and how can you verify it.Most of the kids/teenagers don't have money to gamble.Clearly somebody must give them money,so they could gamble.
You can look it from the other side. It is better that you will teach your kids to gamble, then they will find out about it from a person that will scam them. You that such "teacher" never play for free, so while kids learn, they lose money. Parents will teach kids for free.
I am not against teaching kids to gamble. Let them train logic, memory, observation. I would better teach them that gambling is not how they should earn, that this is too risky. Instead of turning gambling into "forbidden fruit".
One of the reasons why people are afraid to teach kids gambling, because they are afraid that they will lose all their money. Their money. Money they earned. They worked, earned, they have full rights to do what ever they want with their money. Or, people are afraid that their money = your money, that kids will steal/sell items from home/use your card. If your kid is able to do that, it is your fault that you did not teach him how hard it is to earn and to respect money, your fault that you let your kid do what ever he wants and dont bother what he does at free time, or dont spend time with him.
When the kid is born, his knowledge is zero. Of course he gets a lot from self education, but the knowledge you put in his head is what he learns. Spend time with your kids, build your own kids, teach them what is bad and what is good. Then you wont have to forbid something, the kid will understand what is right and what is wrong.