This is simply not true and can create problems in the future if you cannot copy from your community folder.
Try this:
Make a folder on your PC called MSFS Addons. You can make subfolders for scenery, liveries, etc. to help keep things organized for you ;
Put whatever you would have put into the community folder into the MSFS Addons folder instead ;
When using the FBW installer, in it’s setup section, point it to the MSFS Addons folder ;
In Addon Linker settings, point to the MSFS Addons folder.
This way you can enable or disable your addons at will. This is helpful before one of Asobo’s dreaded updates.