Your are very right, But the basic problems is that most of the cars dont come with the owners manual thoose that come are in Japanese, People are least bothered to google or use the google translator.
Other then that our mechanics have created such a big "Fatwa" that the CVT transmisson is a killer, (yes its rated worst for driving experience and reliability around the world) But its meant there to be for fuel efficiency and newer CVT are better off.
No body knows how to properly take care of these, (obviusly because its not a local make)
Like i mentioned the mechanics didnt know how to remove or what refill port to use to refill and then how much to refill, THey were using the method to remove ATF fluid, which some how worked good.
@spectra mentioned the method to changed ATF Fluid, It seems good but leting your car start and letting the fluid drop out at the same time seems (khatarnaak) not worth taking the risk.
Their is a thread on Pakwheels that has correct pictures of the CVT fluid removal and correct filler port, But i would recomend that the removal of the chamber and changing the gasket is not required. THe oil from the chamber pan can be removed with out opening the chamber, (that tube can be opened from outside the chamber as my mechanic did).
But since their is no dipstick, You are bound to use the orignal filler port or you would never know if you are using the correct quantity or not, to much and to less both can be dangerous,
Another way to check if the fluid is full is to put back the drain tube, and keep filling the CVT fluid untill it over flows the chamber and the tube starts to drip under the car. Then you can close the champer screw.