I have no idea why the blog is fetching a Markdown file via JavaScript from GitHub and then using JavaScript to render it... but at least you get the nice "doge" if you don't have JavaScript enabled.
One of the first things I noticed when I checked it out. Both MixPanel and Codecademy are YC so I wonder whether there was any communication around it.
I heard the hovering helicopter too (it was yesterday morning IIRC); it was around until at least 8am. I was so surprised by the continual sound (rather than passing-by) that I even googled how long a helicopter can hover for on a full tank.
Some of the main points are weak and don't really apply to differentiating Lift specifically. For example, the fact that Lift is Scala-based doesn't make it any different than Symfony is PHP-based or Spring MVC is Java-based. Subjective, but I definitely understand that that this is an opinionated view (rather than a objective "Lift has Feature X" viewpoint).
Similarly, what server-side framework that's in wide usage nowadays doesn't have the ability to have some form of generated/dynamic JS wiring? I'd say that's table stakes nowadays, not something to callout by any means.