Given that the cycle (refresh & otherwise) rate of TVs & computer screens is nothing like the one for Alpha waves - and I mean nothing like it, the later can never be a sympathetic resonance caused by the former. Cannot, full stop. As in "proven by high school physics". The suggestions made in your quotes are therefore nonsensical, and likely a new hoax. So forgive us if we take the Mickey - we are not laughing at you, and god knows we have all of us in our time been taken in by some hoax or other.

Watching TV has all sorts of bad effects on one, and some are even worse than the ones you refer to; but enslavement through Alpha waves is not one of them.