However, it does the downloading/starting in a really convenient manner. I wanted something I could just quickly type into a terminal without having to browse some GitHub release page.
I'm sure the author here has good intentions but, this is aimed at beginners (I'll assume, doubt anyone reasonably experienced would humor this) and teaching them a terrible idea.
That said, prior to piping anything to a shell it's advisable to inspect what is about to be executed. That's why the lama.sh script is super simple, as is the code of the web server it downloads and executes.
(but then, what else should I say :D)