STW doesn’t seem to have an over-riding philosophy, AFAIK.

 

I like the PmWikiPhilosophy.

 

Up to and including the part about not replicating HTML and security concerns.
Unfortunately, as I’ve pointed out, STW includes arbitrary HTML, which means rendering arbitrary javascript.
I’ve opened an issue for disallowing HTML markup, but not everybody likes the idea.
I should open a separate one regarding the javascript vulnerability, I suppose.