It's indoctrination
Facebook guys hype this thing up to be a monster. Any newbies (of which there are loads these days) get told it's a monster, they will loose their shirt, don't mess if you don't know what you are doing etc etc, and being new to the hobby they believe it all. They get told stories of fakes and cons and stay away. The propaganda machine on some groups works overtime to these ends.
The same guys spinning this yarn are buying off eBay every day to feed the Facebook groups with vehicle parts and other bits and bobs. Of course they want people to stay away. Despite all the posturing on Facebook, eBay is still the biggest vintage Star Wars marketplace in the world. It just requires a bit more knowledge than buying off a Facebook group. For some people this is too much effort.