He is not wrong. For example, I have to continually adjust scenery order of other 3rd party scenery above Orbx scenery otherwise i get texture morphing and other undesirable effects. FlyTampa Las Vegas is an example of scenery that must be layered above Orbx, an it is installed via xml method.
Also Orbx insertion tool is broken ever since v5. The drop down within the tool does not fully represent what I see in the scenery library within P3D. The order of scenery does not match, so using the insertion tool is unreliable. When I use to insertion tool, I get completely different results in the scenery library, forcing me to use Lorby Addon Organizer to clean up the mess, and not touch the insertion tool again.
After a P3D update and first startup, Orbx scenery will reload into the addon library, I have to manually reorganize everything. It's very asinine. Never had these issue in v4. I can't be the only one experiencing this with the insertion tool.