Yes, this! (Sorry you had such injuries :-/) It says in that article posted upthread that Karen has spondylolisthesis with a lot of nerve impingement problems. Honestly she probably shouldn't be skating at all. I don't know about you guys but I have a herniated disc and if I wear the wrong shoes for an hour or two I get terrible sciatica for days. Skates that put your feet/knees/hips/back out of alignment while training for hours and hours would definitely make a spine problem flare up way worse than that - and in that article she says that's exactly what was happening before finding the Avanta boots. A lot of times "boot problems" are really injury problems. Sure maybe people are tired of hearing about it and don't really understand the underlying issue (I didn't either until seeing that article; I assumed she was having foot injuries), but that doesn't mean it isn't real. Plus, sure, this current generation of skaters is more plugged into social media than any prior generations ever have been, and some overshare. Imagine if skaters from decades prior (Tonya?) had social media what things they might have complained about!
It also sounds like what happened in Pyeongchang wasn't related to those past boot issues at all. It was just a sporadic equipment malfunction that can happen to any skater (see Kwan 2001). Too bad it happened to one with this prior history of boot problems; it's caused people to lump the two problems together. As for the third party stuff, none of us have any idea what went down there. For the people saying she's totally at fault for this, was too lazy to take care of her skates, etc. - I doubt the girl is a skate technician herself. She obviously took them to somebody and tried to have them in working order - problem is, the quality/knowledge base of technicians can really vary, as well as opinions on how to take care of various boot/blade combos, and sometimes things can get messed up through no fault of the skater's own. It's really easy to get conflicting advice on this stuff and trust the wrong person. Also too much moisture could be a problem for boots - who knows, maybe the conditions on the long trip in Korea played a part too.
Dude, you don't know that.