because we'll wiff 1 of every 3 flops and well be oop without the initative which will result in us having to fold alot when we have the best hand postflop, i.e. right here. Im not saying 4 betting is the optimal line all the time vs this guy with kq but to balance our 3 bet calling and 4 bet ranges i think in this instance its fine, specially as we havnt 4 bet him yet in the match.