The few cases I've seen posted seem to be exactly about someone deliberately inserting bad code and MOST work is done by people who ARE in fact being paid for this mediocre work AND know better.

Example https://www.phoronix.com/scan.php?page=news_item&px=mty1mza

Glass door estimates Kay is presumably paid 80-160k for this work and people have somewhat a right to be angry if code like this is pushed.