I found http://www.w3.org/TR/css3-transforms/#svg-gradient-transform-pattern-transform slightly confusing, as normally presentation attributes can be specified on any svg element (see https://svgwg.org/svg2-draft/intro.html#TermPresentationAttribute). It seems the desire here is to break that convention, and regardless of the intention the behavior needs to be specified - to explicitly call out the difference(s) to other presentation attributes AND/OR to specify the order in which transform, patternTransform and gradientTransform are mapped if they're all specified on the same element.

It's possible that the SVG2 spec will need to be updated as well, see https://svgwg.org/svg2-draft/styling.html#UsingPresentationAttributes, since with the section in the Transforms spec a given presentation attribute and the corresponding property may no longer share the same name.