I worked for NASA with hundreds of scientists and engineers and when my office mates and I got to discussing the “clean/messy desk” thing we found there was no correlation because we could find examples of success and failure about the same as clean and messy desks.
I saw a discourse on the Grant’s tomb question recently, and the answer was ‘nobody’ because burial means below ground, and entombment means above ground in a chamber.
I agree with you. The common usage of burial still includes both burial in the ground and entombment above ground.