Maybe, but it seems a really simple experiment to ask if, perhaps, there's another type of defender available to evaluate who's sitting on the roster.
There's a false quote attributed to Abraham Lincoln that goes something like, "give me 6 hours to chop down a tree and I will spend the first 4 hours sharpening the axe." The principle holds true, though. We often prioritize tasks based on what we believe is
directly contributing the measurable success. Quin doesn't want to experiment because he's trying to hard just to win games. This is manifested with his Thibbs-ing. When we have a big task in front of us, it induces too much anxiety to feel like we're sitting by idly while the time for the task is passing us by, much like sharpening the axe would have us sitting there looking at that tree and not seeing any tangible progress
at all while the axe is being sharpened. But engaging in that activity makes it more efficient later on. The person who picks up that axe and immediately starts swinging
feels significantly better because, psychologically, they're (what they perceive as) being
actively engaged in the task. It's too much of a mental barrier to overcome the feeling of anxiety that accompanies "not doing something," and it feels better to engage in inefficient activity.
A while ago
@Handlogten's Heros gave a good summary of this problem when he mentioned that Locke was rationalizing our approach to the Denver series with, "we've never tried anything different the whole year, why would we try anything different now?" Maybe he can be more specific on this, but the argument is more an indictment of why we put ourselves in these situations. Us continuing to ride the main guys while seeing the glaring weaknesses that are there, without trying to find any kind of solution, while hoping that we can just Thibbs our way out of the situation, is going to lead to the same unsatisfactory results when later down the road we're facing the same problem, but feel we have to continue to double, triple, or quadruple-down because we don't know anything else. Or we just think, "hey, we just need to hit our shots and be better on offense." It's a little silly when perhaps there may actually be some interesting solutions riding pine.