Yes if they do bad things like drunk, have sex and do drugs.

I would start with banning cellphones.

Could your child not just call or text their friends? Or is the real expectation to not have to intervene at all about their preferred platform?

Sorry, I know it's a hard line for parents to tread and it's really easy to criticize parenting decisions other people are making, but the "everyone else is doing it so I have to" always seems as lazy to me today, as it probably did to my parents when I said it to them as a teenager.

Is it more important to prevent your son from being weaponized and turned into a little ball of hate and anger, and your daughter from spending her teen years depressed and encouraged to develop eating disorders, or to make sure they can binge the same influencers as their "friends"?

this is the biggest problem, so many parents are head-in-the-sand when it comes to things that can damage a child’s mind like screen time, yet no matter how much you protect them if it’s not a shared effort it all goes out the window, then the kid becomes incentivized to spend more time with friends just for the access, and can develop a sense that maybe mom and dad are just wrong because why aren’t so-and-so’s parents so strict?

because their parents didn’t read the research or don’t care about the opportunity cost because it can’t be that big of a deal or it would not be allowed or legal right? at least not until their kid gets into a jam or shows behavioral issues, but even then they don’t evaluate, they often just fall prey to the next monthly subscription to cancel out the effects of the first: medication