I agree. It is VERY inconsistent. I have made several posts complaining about it. Basically.. I would upload a video, it would get demonetized and when I appeal, it would not be successful. I delete the video and reupload the same exact video, it would be demonetized, but when I appeal it it almost always is approved.
It is funny, because their monetization policy clearly states reuploading the same video wont work, but I did it MANY times. Youtube is definitely not consistent and it hurts.
It takes my videos on average 36 hours to get it reviewed when I send an appeal. HOWEVER, my most recent video, its been in review for 5 days... so not sure wtf is going on. I usually have my videos on private and only release once monetization is approved.
That being said.. I think its silly as heck. I have a few videos that are MANUALLY APPROVED for monetization, but then it still get aged restricted (which means no ads).. I find it odd they approve it for ads, but still allow it to be age restricted. lol.