No, in any form, because licensing.
I recall reading Windows below 11 will not be supported beyond Version 1.7, but I cannot find that note again.
Yes, but “without future updates” also means you cannot update the Linux installation, because updates will eventually introduce a change killing either LightBurn or its licensing.
For example, Version 1.7 does not support camera functions in Manjaro Linux, although Version 1.6 works fine. Apparently the revised & improved camera code in 1.7 requires something in Ubuntu that’s different in Manjaro.
I expect the same thing will happen with routine Linux system updates, because maintaining compatibility with proprietary software has never been a Linux goal.
It looks like Inkscape’s Visicut linkage has enough functionality to suffice for a pure Linux setup.
Some limited testing suggests RDP / VNC can export the Windows desktop to my upstairs Manjaro box / Comfy Chair / dual monitor setup with sufficient performance to be usable, although the jank is strong.