The OPR Has been updated.
When you report a portal as a 1 star, you will be given options as to why you think it should be a 1 star. If there is no option, you should report as a 2 star, and possibly make a comment about what should be added to the 1 star list, as they might have just missed some options.
So go and help the portal network grow by doing your part in OPR today!