It's not hard to sell a dollar for 50 cents. Imo, these businesses are pretty clearly not doing well financially (the revolving door of unvested C-levels is a good hint, the constant postponing of S-1s is another).
That graph looks a lot less impressive when not "annualized". Annualized revenue can be gamed in a number of ways, and is a big reason companies tend to compare YoY to investors once they're public.
Their quarterly revenue looks exactly the same. It's literally the same data. Annualized revenue can be gamed when it is fluctuating. It can't really be gamed when it is growing exponentially for three years straight. There's nothing to cherry-pick.