"Its main goals are security.."
Is it actually?
I also don't really see an advantage of using something like this over something like the Go net/http package.
Web-type API stuff is usually high enough level that something like C doesn't make sense. Go has nice enough standard packages for system things that even if I was doing a lot of system-y stuff I would be alright. I don't really see the type of work I would be doing where I want to use this.