It still includes interactivity & scripting (https://www.w3.org/TR/SVGTiny12/script.html)! Even audio etc.! So that's probably why it didn't get traction.

Because SVG Tiny 1.2 still has support for scripting and CSS styling.

https://www.w3.org/TR/SVGTiny12/styling.html https://www.w3.org/TR/SVGTiny12/script.html

It explicitly doesn't require that the engine do anything with the content of <script> tags, and CSS is explicitly unsupported - they simply use a small subset of properties from CSS as attributes.

I trusted Wikipedia (which says otherwise) without checking the references. Argh!