Sure, a RB can add value with all the other stuff they do, but it should be compared to a sort of 'replacement level' or league average. As far as I know, there's no such thing as a 'nose for the end zone', so I don't think actual TD production matters that much. But maybe.
But yeah, if a RB's production is well above average, that goes in the plus column. Pass protection, etc. Heck, good pass pro might stop a strip sack and so on, and that should matter.
I'm not saying I have any clear answers, except that we should factor in ball security traits probably more than we realize.