Okay I think I see your point now. Sorry for my lack of a grasp earlier.
I agree that making making a subject verboten is not likely to work and is unhealthy, usually. Your sex education example now makes sense. Kids will rebel or act out or find other ways to satiate their curiosity. I think sex education is in a whole different bucket than politics, however. For me, I would say that engaging children/young teens in politics is more akin to alcohol and drugs. These are superfluous and unnecessary parts of culture and environments and lifestyles that are surrounding your children and families (or not) depending on your beliefs and environments.
That said, I could see you taking an active approach to political conversations with your kids like you would with booze and drugs. You have some parents who let their kids "experiment" in their homes in a safe, controlled environment to scratch the curiosity bug. Others think that is inappropriate. I think both are right, depending on their children's personalities and the core family beliefs.
And yes, I think politics (as we define the conversation in 2022 and engage and identify) are just as unhealthy and toxic to the kid/teen brain as something like porn. Both things I want my developing children to avoid as their brains are growing and as they spend their finite time and energy on priorities to make a life that give them the privilege later in life of raising children in whichever way they think fit.
This is why, even when the politics match my own, I make it clear that I don't want them engaging in political jokes or discourse (e.g. aforementioned trolling the class with "Sleepy Joe Biden" as a user handle on their math login, etc. as there are tons of other examples) because they don't know what they are talking about and haven't earned the right to have a political opinion, which is by my design because I'm doing what I think is best for them and their long-term success and mental health.