What he is talking about is:

What if someone finds out about script and adds fake listings to the server list by simply visiting a url? Or finding out a way to a sql injection and bring down your server and/or get your user's passwords?

Also native Lite-C integration means he will also provide a lite-c library that can add to list when server goes up and remove them server goes down. All of that is taken care of for you.

And most of the time point of such "packages" is not whether you are able to it yourself or not. The point is, it's already done you do not need to put time and effort to it.

@ado
It would be a nice-to-have package although, considering the number of room/serverlist based games that may currently be under development, i think only a couple of people would be interested in this, if they haven't already implemented the feature. But availability of such package ready may make some people to start a project, or may be helpful in the future.
Also i would rather build that "script" with a more real-time oriented things like nodejs. It would be easier to implement features like live player count.