Sorry to resurrect a dead post, but I have a 2013 and have been

looking for an OEM hitch. If you have one, it's solid gold, because you cannot find an OEM hitch anywhere except I guess a junkyard.
I return bleary-eyed from reading the internet over and over, and I have found two competing theories as to why the hitch is no longer available from dealers:
1) Toyota/Lexus put in an order for hitches, but the subcontractor/manufacturer drilled the wrong diameter bolt holes into them, so an entire lot or lots were lost and had to be taken back. Under this theory/rumor, hitches will be back in stock by the end of May 2022.
2) the more insidious rumor is that Toyota/Lexus overstated the GX's towing capacity, saying it's 6,500 lbs. when it's really not. Draw-Tite is still selling their hitch for the GX470, their rating is 6,000/600, or 7300/730 with weight distribution, but on the internet for the 460 all I can find is the sh!tty Class 3 that just attaches to the crossmember only and not to the frame, and is only rated at 5,000 lbs. No idea why Curt, Draw-Tite, etc. wouldn't be making a Class 4 for the GX 460 unless there was something going on, but eyeballing it I don't see HUGE differences in the overall geometry and weight distribution of the 470 to the 460. The delay and backlog under this theory is due to Toyota/Lexus trying to engineer a solution to get the 460 to a tow rating of 6,500, or to come up with some sort of mea culpa about selling a vehicle that is not capable of towing what they said it could.
Does anybody have any information that goes beyond rumor or speculation? I want to start towing things, but I just bought my GX in no small part because I believed it was an upgrade to my old vehicle (which maxed out at 5,000). The wait/silence is really messing with me, although the situation would cause me pause if I had an OEM installed...