Straightforward. Many of us are Firefox users. Want to be able to have to the convenience of the remote clipper while using a browser that supports an open web.
FF is the 3rd most popular browser (and the 2nd most popular, Safari uses a proprietary extensions API) Browser Market Share Worldwide | StatCounter Global Stats and making a cross-platform extension seems straightforward enough these days Building a cross-browser extension - Mozilla | MDN
FF is probably also over-represented among RemNote users
I assume that Firefox is especially popular with students and academics, a core user group of the RemNote.
Throwing my hat in the bin. I use firefox almost exclusively and would love this!
Firefox please. I heavily use vertical tabs on Firefox daily.