Ok, these points might, indeed probably DO make sense for, say an 8 or a 10 year old. But, they are not ironclad rules of how tech can or should be used, nor should they be taught as such, and are increasingly inapplicable as kids age past that. And any parent who thinks that they should be permanent ways of thinking about tech is dangerously deluded.
Quote 1: People lie or deceive each other all the time. Sometimes for good reasons and purposes. It's liberating to be able to experiment with a new persona, to be something you arn't, strictly speaking, are, at the moment at least. A lot of growing up is getting to try out being new things, and, tech can enable that. Are some deceptions bad? Of course. But, they're bad with or without the tech when they are.
Quote 2: Don't say anything they wouldn't want their parents to read? Really? God I feel sorry for those children. I don't expect that my kids, now fairly young but growing every day, will have all positive things to say about me all the time, deservedly or not. They need to be able to have that space, that life, to vent, if nothing else. And, as they get older, they deserve to have discussions that they would ordinarily have with their peers in a different medium in another time, but, that would be embarrassing to them if they found out their parent was listening in. THAT ISN'T A BAD THING! I'll go on, but, that leads right into the last quote so, I'll include that idea too.
Quote 3: Kids, as they reach their early teens, are exploring their sexual nature. As a parent, you want to hope that it's just the toe dipping sort of exploration, not the swan dive, and that they are OK coming to us when they have important questions, but, expecting that they feel OK with having their sex lives, nascent and relatively innocent (or, not) as they are, an open book to their parents is completely unreasonable.
Additionaly, the article rightly notes how ingrained that tech is to them, hell, to many of US. Why would we expect that for that one aspect of their lives and development, that they're going to suddenly make a distinction? It's insanely silly. Of course they're going to investigate, both passively and actively, using technology and the internet. Why wouldn't they? Other than the artifacts of how some who don't agree with that have treated things, why shouldn't they?
The best we can do as parents is A) educate them on the risks of doing so, and B) start to make a world where people stop believing that normal behavior + computer = horribly mangled person. I'm talking about insane laws that treat sexting teens as producers of child porn. Employers who think it's OK to snoop on and make moral judgements on things posted on social media. At some point, employers are going to have to grow some skin, or just stop hiring human beings. People are no more or less deviant then they ever were, they don't do stupid things more or less in their youth than any of us, or our parents, or grandparents. The only thing that's changed is they can see it, and can't just pretend that anybody that didn't get "caught" never did anything.
It's time, Past time really, that those of us in the vanguard of the connected generation start using our increasing influence in the adult world to tone down the insanity, "social change X is destroying our children" response to how tech is treated. I'm talking about the external negative consequences of how tech is regularly used that are basically vestiges of old thinking and circular logic, not from any inherit wrongness. Rock and Roll didn't corrupt our parents and grandparents, DnD didn't doom any of us to demonic ritual abuse. The internet and associated tech is not going to doom our children any more than those other things.