HI,
Even though he asked only for the folder, the files will not be renamed. Therefore he had to unregister the vm, rename the folder, rename all of the files, update vmx if necessary then re-register vm.
To complete the process all of the steps must be performed, not just renaming a folder. I've tried to give a complete solution instead the one which looks faster but it may cause more complication. Or you think that renamed folder with old filenames is a good solution?
However this is a known issue since ages, so this is something should be fixed by now...
From another way, It also about skillset too, because you may know how to use cli and other tools, and you know what to do exactly but not everyone. (i'm not talking about myself). This is why this forum exists, to get help. Usually there are multiple answer for a question, and since you/me are not know the one who asked we have to try to follow the official way, and not cause more problems to the user.
As a final thought, I understand what are you saying and i agree. But try to see this from a different angle. If someone asking "How to rename a folder" are you sure he/she will be able to follow your process?
AJ.