This guy

Not exactly.

Saw a single Reinhardt once. Took a long time figuring out how not to kill him and get the pots behind him. Think I let him beat on a no counter green, Surtr maybe.

That's probably because people are mad for the changes introduced to Aether raids

I did encounter a setup kind of like that, once.

I encountered an unleveled Oliver, him being the ONLY unit on the map, with the urns right in front of me, and nothing else.