I have to be honest and say that I don't really remember a whole lot being said beyond "there will be changes" and something appearing to be happening with the Hitchhiking Ghosts.
But as far as I know, everything with the stretching room is coming entirely from AvastIndy's post/account. Which is not to discredit them, but as far as I know they are the only source of this information and because many are predisposed to assume that even one sniff of a negative rumor (or one perceived as such) is obviously gospel because OF COURSE Disney would ruin something for no reason. There is also the possibility that AvastIndy is posting this in good faith and his source just happened to be making it up (some people having a habit of inventing stories just for the heck of it, you know). All I'm saying is that unless there is additional information that I'm not remembering, it seems like we're putting an awful lot of credence on the information of one person, and one person who (again, not intending to be disrespectful here, just pointing it out) hasn't been posting here all that long. It just feels like there's little interest in vetting sources if it seems to support the underlying narrative people have that, for the _______th time, big bad Disney is just going to come in and muck everything up, leading always to the Worst Possible Outcome.
If there's something I'm missing that proves this is happening beyond that poster's account, AND that it 100% could not simply be something being done in reference to HMH, I'm all ears. If it turns out I'm wrong, it turns out I'm wrong. But until then, until we have more information (and/or the thing is open again), it seems to me like we're ready to throw out the baby with the bathwater based on very little.