SSO vs traditional login

With v1.17, NxBookmarks switched to SSO and no longer has the traditional login method available. This raises an issue for those not using the Nextcloud Files App ("NFA"), which SSO requires to work. The traditional method should remain available as fallback when the NFA is not installed; it's fine to favor SSO otherwise and even to show a hint – but nobody should be forced to install another 30+ MB app just to be able to log in.

You might ask why one wouldn't want to have the NFA installed when using a Nextcloud. There could be many reasons. First, not everyone uses it from their smartphone, while still wanting to save bookmarks e.g. in a read-me-later way. Second, none of its functionality (as far as it's present and working) might be needed (see for example the outstanding bug concerning file sync not working properly, open since 2016 and still not addressed – what use is a cloud app that cannot properly sync? Just mentioning this as an example why one wouldn't want the app). Third, on some low-end devices it might not even be an option due to wasted space and missing performance.

TL;DR: no demands of course, but I'd really appreciate the "traditional logon" as a fallback. Thanks for considering!