On the joke, define “sane”. 😬
On a serious note, I think there are valid reasons to have several VMs other than “I was bored”. In my case, for example, I have a total of 7 VMs, where 2 are miscellaneous systems to test things out, 2 are for stuff that I can’t normally run on Linux, 2 are offline VMs for language dictionaries, and 1 is a BlissOS VM with Google programs in case I can’t/don’t want to use my phone.
[Copypasta of the other repost] While I know the situation described in the article can set a precedent, the title feels misleading at best, given the article describes a single case, and not (yet) a widespread practice.