They didn't do anything to the G1, did they? I got mine through a different source than officially through T-mo, but from what I could see, the Fav 5 and hotspot locator apps were optional downloads. Was it different for those who bought their G1's straight from them? Besides, even if they did, couldn't you just reflash it?
They're maemo and MeeGo... "Meamo!" sounds like what Zorro would say to catherine zeta jones... after she slaps him for looking at her dirtily...