Much like Raybestos, Standard Motor, and Felpro, Moog seems like a company trading on its past reputation
But then I'm younger, and I don't work in a shop, so my timeline of experiences is understandably shorter than others here
Well, my experience, even more recently, while not as good as it has been IN THE PAST with these companies, hasn't been as bad as yours, however, to provide you with some context you need to understand that you are not far from the truth since Monroe, Rancho, Clevite, Moog, Wagner, Fel-Pro, National, Sealed power, Walker, Champion and Beck Arney are ALL "DRiV" brands. All of them are divisions of the same company. And ALL of them are lacking in the quality and craftsmanship that made those names popular in the first place. However, they are STILL better than the majority of what is out there, since the majority of what is out there comes off many of the same Chinese assembly lines as those products do, but with less stringent tolerances and quality expectations from the companies that have contracted with those Chinese manufacturers, which makes it the companies fault for poor spec.
But, point being, mostly the parts from any of those brands are still better than the vast majority of what you'll find on Amazon OR the house brands you'll find at places like O'reilly, Autozone or Advanced. But honestly, aside from a bad part here and there, even Master Pro and Duralast tend to on average be better products than 90% of your Amazon and Fleabay chinese off brand products.
Others are just as bad. Dorman is generally reliable and that's about it. It is not a superior product line like it used to be. It's only saving grace is that it sells products in the aftermarket that either nobody else does or nobody else is as readily available. Cardone is still barely decent but heading directly for the "nothing but trash" category. Especially for things like rack and pinion units and power steering pumps. Put a new one in, louder than the faulty one you took out about 50% of the time.
"OEM"? I hear this on these forums all the time and you know what "OEM" is? OEM is whatever brand the manufacturer felt they might be able to trust with a substantial production run that is a company with a halfway decent reputation. And almost any of the aftermarket companies that are a known quantity might very well be the OEM for any given part on any given vehicle at any given time. I heard recently on a Ford forum, from a supposedly knowledgeable technician of 35 years that you can't beat the OEM quality of Motorcraft parts because they are made in the USA.
I laughed until I cried since a hell of a lot of Motorcraft and AC Delco "OEM" parts, and also their aftermarket parts, are made in Mexico and India, and, China. It's no different than PC power supplies. I've heard people on tech forums that I frequent and moderate on that you should look for "Made in the USA" power supplies. Really? That's great, because there ARE NONE. ALL, ALL PC ATX power supplies, ALL of them, are made in China. There are ZERO ATX power supplies being manufactured anywhere else regardless of where the parent company might be whether it's the US, Germany or Timbuktoo.
What matters is whether the company/brand has specced the part in such a way that the result is a quality component, or whether they've opted to go cheap since the majority of consumers want cheap crap. Period.