I don't know where you've been but Techcrunch has always heavily promoted Facebook. In fact, a couple of years ago I thought they single-evenhandedly pushed the Facebook valuation from $20 billion to $100 billion in a matter of months.
They were writing an article about how Facebook gained another $5 billion in valuation every other week. Who else writes articles about valuations of a (still pretty random at the time) company every 2 weeks and about each incremental rise? I don't think I've seen that ever before, even on BusinessInsider, and they do a bit of that, too.
I may be exasperating a little, but Techcrunch was a pretty powerful force in the tech world then, and I do think it influenced valuations and put them on a feedback loop just by writing about them every 2 weeks, on how Facebook's valuation grew another $5 billion, and then that would influence investors and help it gain another $5 billion. Not to mention TechCrunch was also one of the very first sites to use Facebook comments. So although I'm not reading TC these days, I'm not surprised that you've noticed that.
Welcome to six years go? It never meant anything. You, too, can create a website and write whatever you want. The trick is, um, tricking people into believing you matter. They won that game a long time ago.