Because I used to be a cop. No department worth its salt would ever impose quotas. They are illegal in most states, and they’re a bad idea from the start whether legal or not.
However, I used to get that crap from almost everyone I ever issued a citation to: “Just gotta fill your quota, so you stopped me”, that sort of thing. My stock response was “No, sir/ma’am - we don’t have quotas, I can write as many tickets as I want”. Following that exchange, I would then check for minor things, such as expired inspection sticker or plates, etc. If they had been civil to me, I would have simply given them a verbal warning to get it fixed. After they ran their mouth, it’s ticket time.