A LightBurn employee responded on this thread 2 days ago that they only support 18.04 and 20.04 so I would think THAT is what should be believed. Not an email from a user of the software and not a LightBurn web page which hasn’t been updated and says it runs on 16.04+. I’m betting on the staff employee stating what is current.
And I have a feeling it won’t run on 18.04 since the GLIBC issue others had states needing 2.29 and IIRC 18.04 is 2.27. But I’m downloading 18.04.6 now and will test to be sure.