That effectively deals with the problem of your kids accessing screens right now, but you have no idea what the impact of denying access to "social" tech will have on them in the long term. Maybe it'll work out and they'll develop a healthy relationship with tech, or maybe they'll be traumatized by that denial and be far more susceptible to screen addiction in later life because there's no one there to regulate it for them and they haven't had the opportunity to learn how to self-regulate. There's no way to know. This stuff hasn't been around long enough to study it properly.