If you trust your browser it's fine, and if you don't then both CSS and SVG are significantly more risky.
Remind me again what the ratio of browser sandbox escapes coupled with full RCE is between JS, CSS, and SVG?
> then both CSS and SVG are significantly more risky.
how???
This isn't true at all.
Anything SVG does maliciously, it does by containing JavaScript, so SVG's worst case is a subset of JS's.