We try to avoid abbreviation in OSM unless the "true" name contains the abbreviation...that's always a case-by-case debate, but in this case it should have been "Highway" if anything.

And to be clear, this road is named, but it's not a simple string name that can be canonicalized in the name tag. This is a state road designated as part of State Route 7...or Route 7, State Highway 7, Highway 7, Missouri 7, etc. That's the issue: there is not a canonical text rendering of this designation. So we use route relations to convey this and also ref tags for data consumers that don't process the route relations.

I did not add noname=yes back to the ways