Wow, Robo, I don't think I've ever seen this kind of reaction from you before!

FWIW, I agree with you. It just seems odd that someone would stay in those conditions. While Pop may have been fully booked, not every single resort on property would have been...and they can easily transfer you to another resort (even comparable ones like the All Stars). People have easily moved to other resorts if they have been unhappy with the current one.
The poster says there was mold ALL over the bathroom walls, tile, shower curtain, "etc" (not sure what "etc" refers to). If that were true, it doesn't seem likely that Disney would ignore something that serious as certain type of mold are
lethal. Not to mention Disney can and has been able to offer credits in ways other than cash (they have gift cards they can apply credits to). This just doesn't add up right.
If it's true...then wow, I'd be doing a lot more than just now deciding to "write a letter" two weeks after the return home....