Is the cooldown system workig as intended?

I got a few duplicates which you can mark as a duplicate in a few seconds. After the 4th one I got a four hour cooldown. I do not think that this is working as intended.
This is my 3rd or 4th four hour cooldown I got in recent weeks. I never had one before after nealry 15000 reviews.
The cooldown system seems to punish one in the three following situations
- If you get multiple 5* nominations like playgrounds which you can clearly see on the satelite mage without the need for zooming in.
- If you get multiple **** nominations which you can just 1* by just seeing the image and the title
- If you get multiple duplicates. This one is definitly niantic's fault because of the cell rules and pokemon go players nominating duplicates without knowing that they are already in the wayfarer database
Comments
Make sure you always take at least 20 seconds for each review, even if it's a clear duplicate or a clear case of rejection. The same 20 seconds rule also apply to edits reviews.