@schalkneethling @darth_mall the developer (I believe it is maintained by a single person) says "As of 2022-04 Firefox has less than 4% of the browser market share and therefore supporting it is not worth the effort."

Thread here, along with pushback on that number (only viewable on chrome lol): https://boxy-svg.com/questions/376/firefox-not-supported

It seems like they just don't want to support more than one rendering engine