Don't worry, most likely your children will come across the normal sorts of bad people - cheating partners, bullying peers, abusive bosses, rude customers, lying beggars, maybe robbers and thieves. It's fortunately unlikely they'll meet a guy who is outspoken about his opinion that scientifically capturing people's attention to get them addicted to screens is morally much worse than showing them "penis into vagina episode 74786". We don't want their innocent minds to be poisoned with ideas that question the status quo.