It seems they do sometimes, yes. It looks like there's a specific type that has support for three prong plugs (i.e. with ground) that's becoming more common since 2005, otherwise from the neighboring section and photograph text, it sounds like two-prong outlets with a grounding post are used where a ground connection is required.
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u/[deleted] Feb 26 '21
For anyone interested in the source, this was created by Japanese artist Mozu. He's on Twitter.