This quote from griffin basically answers your question...
Another issue raised...Originally Posted by griffin
Unfortunately such is the nature of the beast because everything from Article02 onwards deals with subjective opinions about what should and shouldn't count, and as the Transformers expands so too will the need to add more articles to deal with it. I've tried to simplify it where possible - for example, I had a separate poll for Be@rbricks, Revoltech etc because some US fan was asking about it, but then "merged" those TFs with the pre-existing Article12 (they count as "non mainline" Transformers), thus eliminating the need for a separate article just for them.Originally Posted by griffin
At the end of the day, if you don't like the UCM, don't use it. The only time you have to use it is if you're going to participate in the annual survey for the average collection size - but that survey is not compulsory, so if you're some kind of conscientious objector, then feel free not to participate in the survey!
It would be ideal if as many people as possible did participate in the survey though as it would help to give us a better idea of what the average collection size is.
Once again, please be aware that the already existing Articles of the UCM cannot be significantly altered or changed or else it would render comparative data useless.