Look at this topic, of course she has detractors! The internet is filled with Gaga haters. I admit the media is in general favorable to Gaga, but even that I feel is changing. They are building her up to watch her fall. That is something that definitely separates Gaga from Madonna. Madonna had to work for years and years to prove herself and gain industry respect (and still doesn't totally have it). I'll give you guys that.
The internet is filled with people who 'hate' (?) a lot of things. It's simply probability--I mean, there's over six billion people on the face of this pale blue dot, are we truly expected to like the same things? It seems a fanciful thought, but a highly improbable one. Just because something is popular doesn't mean it has merit, or vice versa, and in the case of popular music people, you're bound to find people who think them to be all sorts of things, from 'the greatest thing that ever happened to me' to 'plain, boring, fake, and entirely a chore to observe.' I don't particularly think not finding something to be to your liking accounts as "hating", but it seems to be the popular tag to sum up people who don't find someone one likes to be as great. Moreover, I don't think threads should be kept 'fans only' unless the forum itself is pro (insert thing here.) (i.e. if we were in a Gaga fan forum, it wouldn't make sense to post that she sucks, that could be seen as unwelcome, since the entire point of that forum would be to voice one's liking of her.) It seems to me like whenever one starts a thread about something, that subject is up for 'debate', and thus one can voice both agreement and disagreement with the topic being discussed--then there are the annoying people like me who like to debate about various things ad infinitum, just for sh-ts and giggles, basically.
I do agree that the media is setting Gaga up to fall--I wonder if she knows--it's so painfully obvious. The higher they rise, the harder they fall, especially when it's so entirely premature, almost 'undeserved'--I put that in quotes because she has done some hard work, so I don't want to say she doesn't deserve recognition for what she's done, but the grand sum of her fame can pretty much be accounted to media hype (very much like Bieber, and all others who seem to have come from nowhere and become household names faster than we could trace), which is why it's skyrocketed the way it has so quickly--the only way that can be done is through the media's gears, so it seems as though her present state is more a result of their actions than her own, because they have her end in mind, as you have so cleverly pointed out.
In any case, yeah--Internet is full of X 'haters.' My favourite being:
http://www.experienceproject.com/groups/Hate-Dr-Phil/78461
It happens--we're human, we don't all like the same things, and the more popular something is, the more obnoxious it will seem to a lot of people.