It seems whenever a player goes to a club perceived to be "lower" than the alternative club, people get on the player's back. Bellamy got a lot of flack from supporters of other clubs for picking Rovers over Everton.
The thing is though, in this case Liverpool was supposed to be his boyhood club. That is why he wanted to move originally, as I understood it. Thus his going to West Ham, coupled with what I thought were "smalling the club down" (as opposed to "bigging the club up" ) in the couple of years leading up to the move (especially in the Australian media), annoyed me at the time.
However, the whole deal was done and dusted long ago and it won't change, so it is no use getting riled up about it any longer.