Wow, I can see where they are coming from but they are kinda being jerks about it. I highly doubt that the RSB alone is going to cause you to drive soooo much more aggressively than the stock one that you are going to start blowing out wheel bearings and such. I've had mine on for a few years now without issue. I did upgrade the end links to the Moogs but that was just cause the stock ones were so corroded from the winters that they were going to be cut off anyway when I did the bracket upgrades.
I'm surprised that the end links would have gone bad so quickly. I wonder if they didn't tighten everything enough, it loosened, caused the noise, and being loose caused a lot more wear. Hopefully if the stock end links are shot, then the Moog upgrade or even replacing them with new stock ones might help if that's the cause of the noises. If they are being funny about stuff you may want to consider putting them on yourself. I'm sure the weather is getting cold up there but you might have a few nice days left if you hurry. hahaha.
I would try rock auto or amazon for parts. I don't know what shipping would be like to Canada though and I am unfamiliar with Canadian vendors.