https://bugzilla.redhat.com/show_bug.cgi?id=1728307
--- Comment #5 from Nicolas Mailhot nicolas.mailhot@laposte.net --- It is not a stupid question, the font situation is a mess because everyone thinks it is simple, no one makes an effort to do things cleanly, and as a result fixing things falls on packagers.
Yes, you can just remove all the other formats, and keep only the opentype file (just check in a browser in case you made a typo somewhere)
As far as I know, caniuse is the reference to check if a feature is supported in browsers. It's a thankless inventory task no one else wants to do.