That's a bit of a stretch. Pretty much every tractor manufacturer has checking the loader attachment bolts on their periodic service checklists. In fact, I've seen you recommend that someone remove one of these bolts, to ensure at least one full bolt diameter worth of threading is making contact...and that was on another brand, so it's not just an LS issue.
When I did the 50hr service on my 4047, several of the loader bolts tightened up a bit, but none were what I would call loose. I've checked them twice in the subsequent 50hrs, and they haven't loosened up at all. That sounds a lot like what people report with many different brands.