Yes they can, but on those videos, you have to be aware of what you're commenting on. Those free energy, perpetual motion, water powered car etc... etc... vide

Yes they can, but on those videos, you have to be aware of what you're commenting on. Those free energy, perpetual motion, water powered car etc... etc... videos aren't scientific. They're religious in nature and when you challenge their beliefs, they will respond in kind as if you've questioned a miracle. But really, I don't think it's a good idea to stop uploaders from pruning their own video comments. That could have other repercussions so, let them censor logic all they want. The solution to these videos popping up is to make videos of your own explaining in detail why they can't work. Call them "The truth behind free energy" or the like. Bill Nye and Neil deGrasse Tyson are already famous and they will have an audience. If you cultivate your own, you can properly make a stance. Fight fire with fire, as they say.