Remove all the non-standard stuff. If only Blink supports something because no other rendering engine thinks it should be implemented, then it doesn’t belong here. It’s non-standard, vendor-specific behaviour that you’re making people think is standard.
> Remove all the non-standard stuff.
I can create a filter for that, thanks for the feedback! Importantly, experimental and non-standard features are not counted in the primary score.
Experimental capabilities have a little 'flask' icon next to them, and non-standard items have a little 'warning' icon next to them, mirroring MDN conventions.