I didn't say that it was a good thing for BB to be this way! JR SHOULD be more effective.
I was just saying that it is important to retain relatively high JR, because your players will still take threes, even if they're terrible JR-wise. I think JR is important, but not effective enough.
I've consistently heard about this unguarded vs. guarded shot situation, and obviously agree that an unguarded shot should be measured against a constant, one where it is comparable to being covered by a 1 or even 0 OD. This would allow for Threes to go in at a higher rate, rather than the garbage situation of allowing good defenders to somehow defend "unguarded" shots.