The issues are real. Even GM has admitted to struggling to find fixes. Dealerships admit to the issue when they drive one that exhibits them
I'd venture to guess that a lot of the vehicles are driven by those that dont generally drive over 75MPH or just dont care (which is easier to do if you are leasing a $40K tahoe vs a $80K or $90K GM/Cadillac). I have a buddy that has a tahoe and asked him "hey, you have any issues with it?" he said "nope, its perfect". He picked me up the other day and it had terrible buffetting. I pointed it out to him and he said "oh yeah, that...Well, I leased it so I dont really care". He is the opposite of a 'car guy' and treats his vehicles like rented appliances.
As for who posts here...I'm more concerned about folks that are staunch GM loyalists than I am with folks that come here to post their issues looking for help/resolution and have a history of buying all makes and models. It took test driving half a dozen GM vehicles to find one that didn't boom/buffet or vibrate. I have a '16 yukon denali that exhibits none of these issues. I've owned mercs, toyotas, audis, VW's, Infiniti's. I have zero allegiance to any make.
Nobody is 'recommending' the ford. Simply noting that it looks interesting and may give GM some serious competition. Its also important to remember that nobody is claiming that GM vehicles alone have issues. All makes have their problems.
NOTE: If anyone in the DFW are has a truck with this issue, speak up and maybe you can show TD that this isnt a global internet false flag conspiracy by paid ford trolls to very slightly degrade GM's dominance in the Truck/SUV arena?