Author here. This is completely correct. But my main motivation for creating this was getting something working in a easy and portable fashion.

Basically I wanted to have something I could share with my colleagues and which could be accepted as "documentation" if checked into source-control. For that using a dialect of diagram-generators which nobody else can get working isn't going to cut it. Those solutions are hardly "out of the box"-friendly, and even less so portable.

This package relies 100% on websequencediagrams.com, and for that it is restricted by whatever the website supports.

But because of that it's also 100% portable and should work out of the box on any machine, without any other prerequisites. And I think that is quite nice.

I just thought it was useful and wanted to share. If my needs are aligned differently than yours I'm not going to take offence :)