XCS is closed, locked, proprietary and xTool controls the content/art created there.
You may find Paragraph 2 Section 10 quite interesting. I did.
https://www.xtool.com/en-au/policies/terms-of-service
The specifications for LightBurn are Documented and GCode is a published standard. Our team is also adding new equipment as quickly as we can. xTool definitely claims to offer ‘LightBurn Compatible’ hardware.
I’ve seen xTool make at least two (possibly three) unannounced changes to their firmware on the xTool D1 / D1 Pro to put speed limits on the GRBL rotary control. Currently, I know of at least two users who are struggling with Rotary devices on their xTool D1 engravers. I can’t tell if the latest xTool Firmware allows GCode control of the rotary device.
When they made changes, or design decisions, historically they haven’t shared this information with us. They’ve got a lot of different machines out there and they seem to be a moving target and securing their IP.
Some new features are scheduled for LightBurn 1.5.xx that should help address some of the firmware customizations. This will allow several users to more readily adopt odd, non-standard hardware, and even custom projects like Drag point engravers, Plasma Cutters, Quilting machines and other wonderful things.
If a Manufacturer of Laser Engravers wants to be less ‘LightBurn Compatible’ than a revitalized drag-point engraver or a quilting machine, that’s their prerogative.
We are constantly moving to support more hardware all the time. We may not immediately support each and every “weird-duck” machine with 1% of the market, but nerds love weird machines so we’ll get a lot of them. The further a design is from the current knowledge base and current standards, the longer it will take. Ruida was a “weird-duck” when LightBurn began to reverse engineer the controller. Ruida had a huge market share and their software was notably… er… uhm… “Inspiring”… 
When a Reverse Engineering cycle is required, it can take a while and it can be expensive. It might take us a while but I’m confident that we’ll get there.