I get the disagreeable feeling that there might be a huge misunderstanding with this addon organizer. It's not the Lorby programmer who "invented" the possibility to use the xml coding.
It was LM who offered this possibility already in P3Dv3, but many users didn't know it and most of all, many of them even had problems to create a correct and working xml file for a scenery or an aircraft.
Additionally it's LM who strongly recommends using the "add-on.xml method" and saving these datas in
C:\Users\Name\Prepar3D v4 Add-ons\
This is also a recommendation of "Poppet" Elaine Dixon and other reputable P3D specialists.
For example have a look at this video by Matt Davis:
Oliver Binder, the Lorby creator, provided with his software an easy method to handle this procedure.
This software is still in an updating phase. If there are suggestions for improvements why not sending him a message on his web page.
And as I wrote above, this must be said unequivocally again, it is Orbx FTXCentral which is not able to "recognize" and to handle sceneries that are saved in xml format. FTXCentral is made for Orbx software only and only reads thoses sceneries that are saved in the scenery.cfg file. And it's Orbx (and other third party scenery designers) who doesn't follow LM's recommended way with their auto installers.
Addon designers have to follow the procedures of the simulator producer. Their software must be adapted to the new system. That's what we did with Mircosoft Flight Simulator for many, many years and we got used to it. Now it's the era of LM and they turn things inside out. As a result addon designers and us the users we have to follow the new rules. They still dwelling on the former FSX method. (I don't say it was bad.)
And, P3D is not exclusively programmed for Orbx software. It's just us with our field of activity who "depend" on Orbx software for our VFR flights.
Btw, I'm not being related to Oliver Binder, I even don't know him personally.