Hmm, well they've brought in the wrong coach for it. McCullum is from the rougher side of Dunedin iirc. He's pretty far from the model English establishment man in general.I completely agree with your general point, but with Crawley specifically you’re wading into some shaky ground. It’s long been suspected that ‘team culture’ is used throughout English cricket as an excuse to select white upper class guys over objectively better players. It’s quite central to the Yorkshire scandal, and there was a media scandal arising from some members of the press talking about Archer in exactly those terms.
Having dropped Hameed and stuck with Crawley, any vague hint of that kind of talk will potentially cause some massive PR problems. They kinda do have to just select like Cricket 22 selectors for a while.
I think McCullum has enough to drop Crawley if he wants without making it Cricket 22 selection, especially since he won't frame it as "you suck" but more "you need to get out of town and just bat, clear your head".
I suspect he won't want to give up on his new charge so soon into his own time with the team though. This is a man who drove the Ish "fresh from under 19s and average 50 in FC" Sodhi selection for over 10 tests as a total passenger who had to be hidden because McHesson wanted to develop a good leggie.