What we have seen is one guy making outrageous claims on FB and other people believing him. You see, something this huge would be on at least local news, if not national.
Some people who experience a problem take it very personally and go completely scorched earth on whomever they perceive as the 'guilty' party. When people repeat the hearsay, it artificially multiplies the problem. Like the guy on FB saying he has seven+ 574s. While not impossible, I find it unlikely that someone has more than about 2 of any given model of tractor. There are also some unscrupulous dealers who would bad-mouth the opposition publicly, especially when they are losing sales to them. The internet makes this pretty easy.
Of course, a percentage of these problems are real, but another percentage are simply the result of poor maintenance or equipment abuse.
So far, I hear 1 real issue and it is from the OP of this thread and seems rooted in a bad dealer.