And that’s where you are wrong.
Many subscribe to the notion that the ACDA standards rule in the area of choral music engraving — including the ACDA.
Dorico does not support this standard while everyone else does—and it is a standard whether you agree or not. Even oldie mouldy apps like Encore as well as MuseScore and Overture get it right.
Despite all the fanboys who like to scream that Dorico is ready for Prime Time, for some of us, it ain’t. My church gig requires a lot of hours arranging for choirs and other ensembles so I am in the trenches. Not only must they get the choral tenor clef right but MusicXML into it must also work.
This is important!
Every other major and nearly all minor notation apps get this right. Don’t worry, I use them and hope that Dorico will come through someday… In my productive lifetime would be nice.
As for the bass/doublebass issue: The standard is that they both share the same clef, as confusing as that is for notation apps (Finale fixed this when—2012 or 2014?). Players have never had a problem with this and as a cellist/bassist, I have firsthand experience.