I disagree

I dont like it when People say that they "deserved" a better endning because they literally gave a show that was suppose to end at 5 seasons 10 more. The actors should be allowed to move on and thats that. We as fans shouldt demand like we are entiteld to anything. Like they owe us or something because they dont.

As for the plot holes: Yes you do have a point. Logiclly jack should have gotten rid of the monsters but i actully generally enjoyed the last episode because it was full circle. Sam and dean hunting one last monster of the week like it all started. With Johns jornal even. Dean always said that he knew how the Hunter life ends so it felt fitting. At this point, Chuck wasnt writing their story anymore so there was no plot armor. And Sam always wanted to leave hunting behind for a normal life so that fits.