> Is anyone else doing so?

I think there're many companies producing consumer devices based on Power Architecture, such as STBs, NAS devices, HDD recorders, FTA receivers etc., but that's mostly nothing that you or me would classify as a device for 'personal computing', while on the other hand devices like tablet PCs surely are devices suited for personal computing. So if we're talking solely about consumer devices of the latter kind then my answer is: I'm not aware of anybody else doing so.

> I'm actually shocked at the android sticker. Is it for real? I mean, are there
> any known devices out there, PowerPC based, running android?

As THTF/LimePC are marketing both their Power Architecture based netbook LimeBook A7/A9 and their nettop X1 as being delivered with Android I think they're only consistent in marketing their Power Architecture based tablet PCs as running Android as well.
Other than THTF/LimePC I'm only aware of this (not a consumer device though):

https://morph.zone/modules/newbb_plus/viewtopic.php?topic_id=6565&forum=3 (status: "No Longer Manufactured")