Not supported usually just means that the company isn't devoting any resources to that functionality, implementing or offering support if there are problems.
Also, it often means "paywall, buy something more expensive and we will support it".
I know, I know. I work in "big company". It's always a number game. Often it is also some dick saying "if they want that, make them buy the one that costs more, its good for our books".
Having the more expensive one come with more support is actually a reasonable approach. The dick move is to do extra work to make the cheaper one less useful and harder for DIY improvement.