Whittaker is a cool dude, but I actually hate everything about his fighting technique and style.
I absolutely hate his chest-thumping routine, before every fight.
He used to have some big balls, but (like Costa) has become more worried about "being hit" then he desires to "do the hitting" ...
IMO, "defensive awareness" is important, so long as it is ensconced in intrinsic training, rather than "obvious personal worry" ...
When I see any fighter more worried about "being hit" then doing the hitting, I no longer care about that cautious, flinching fighter.
Whittaker and Costa are both in the latter zone.