When a bad senior or junior/medior delivers their pr, I (or some other skilled senior) review it and it has issues which I explain and we go in a fix loop. Often I just approve it and fix it myself as it takes too long. That is good enough as that’s going on in all companies. Gpt is the same only many times faster; the loop is instant and sometimes I give up and fix it myself, as it is not going to get it, just like some (depressingly many) humans.