Hello confused, I am not a Khadas team member. The adverts for the Vim put it in the most positive light, this is true for all adverts and for all products from all companies. I and others did not see the Vim as coming with the OSes listed already installed, and saw Android as the installed OS. Yes, dual-boot boxes are available, but they are pretty rare and have varying degrees of functionality. In the future, do your research.
You say there are other, cheaper boxes that just work out of the gate. I have been a serious Android TV box entuaiast for years now. Somehow, I missed the model you are referring to. Perhaps you will enlighten me. Please tell me the box you speak of.
For every box you do list, my guess is I can find a forum full of opinions contrary to your statement. But you may know something I don't. Looking forward to your list..
It seems you are geared to complaint and not resolution.
When you get past the tantrum, I will help you accomplish your objective, ref Linux. But you will have to drop the attitude and adopt a more positive attitude or we will just be pissin' in the wind. Anger is counterproductive.
If you don't have the patience for this stuff, maybe you could sell your Vim to a more inclined individual and buy the 'golden" box you say exists. In the time you have wasted on complaints, we could have had you running Linux by now.
Good luck, I will not engage you further. Though I am still willing to help, I won't further respond to your venting.