No, it's actually a lie, and it's different than the Hopper GPU you mentioned.

People have been seeing every big AI company talk about how AGI is the holy grail of AI, and how they're all trying to reach it. Arm naming a chip AGI is clearly meant to make casual observers think they cracked AGI.

The Hopper GPU isn't the same, because Nvidia isn't actively trying to make people think that it includes a lifesize cutout of Grace Hopper. Not a dig on her, but most people don't know who Grace Hopper is, people haven't been hearing on the news for the last several years about how having a Grace Hopper is going to make every job irrelevant.