In some dimensions the current or most widely used implementations of social media are bad tools. Meaning you can use them to get some things done, but you may injure or impair yourself in someway in the process.
Kids probably don't have the requisite restraint and discernment to minimize the damage done by bad tools. Heck many adults don't even use most social media well.
Longform or slower social media can mitigate some of the downsides of reactionary, or rapid cycling formats.
Most I know struggle in some way, but the kids more. Those kids will become adults though.