Nah, if you can run RetroArch, you can use these.
So Batocera, recalbox, RetroPie, lakka, etc should all be able to use these. With some work you can probably use them on more stuff, but outside of my ecosystem so idk.
Not to discredit or belittle the work here, but at the end of the day it’s just some images, so anywhere you can load images as overlays you can benefit from these.
(The discredit/belittle remark was about simplifying your work into “just some images” )