Did Google Maps really relabel Lake Ontario?

I’d treat the claim as unverified until there’s a clear comparison or confirmation. Check the same area in Google Maps with the language and region settings noted, then compare it with an authoritative geographic naming source. A single screenshot, especially without its date or settings, can’t establish that the service changed the name broadly.

There are two separate questions here: what name a map service displays, and what name is officially recognized. Even if a different label appeared in one view, that alone wouldn’t prove an official renaming. I’d look for an explanation from the map service and check whether the display differs across settings before drawing conclusions.

If the label really was changed for political reasons, people are fair to question that. But the claim as presented doesn’t show evidence of the change or establish why it happened. I’d keep the concern separate from the factual question until there’s something more solid than a circulating post.