SAML authentication

Has the forced SSO been resolved? I see this in the admin panel:

Or does it say require while not actually requiring?

I’m attempting a new enterprise deployment and just got SSO working, but I’d hate to find it is not actually going to force the use of SSO. Additionally, can’t find how to get SSO working on mobile app; I assume the lack of mention on the mobile app login screen means it’s missing, which would be hugely disappointing since what enterprise has no mobile users… it defeats the whole effort of attempting to force security best practices.