Drop shipping used to be prohibited, and this was 2 to 3 years ago. So, the information you read will be outdated or not updated at all.
Even I, indicated years ago, it was not allowed, as that was the policy. That is no longer the case.
The sad thing is that these big companies, just don’t want to be helpful, for small business owners, even I, don’t get great support. I have to go to great lengths to just get support. Even then, I usually find alternative solution to the problem. And that is what I have learned over the last 5 years. Due to poor support, it is faster to find alternative solutions to the problem, albeit not perfect, is the only way to fix client issues faster.
Ow, I get frustrated a lot with support. It’s my wife who calms me down; she is my zen! Her way of thinking is more relaxed, mine is more ones and zeros.