It is as clear as it can possibly get. Take any game officially published in the west since the mid-90s and you will get a straight yes or no answer as to whether it is eligible or not. The questions you have asked so far have received clear answers as to whether they are eligible or not, and could have been looked up in seconds.
What you are saying is you are disagreeing with the methodology, because it is defined by "some organization". This organization just happens to be the industry standard for publishers, developers, retailers, sites etc. in the biggest western gaming country (
by far), which TASVideos is also hosted on. It is a serious major organization, with serious involvement in the game industry, its retail industry, and many other gaming sites.
If you propose we invent our own rating or acceptability scheme, it most assuredly would be far less clear or transparent, on top of being a lot of unnecessary work. Is that really what you are aiming towards?