The problem is Toyota would have the same exact response if you took a defective filter back to them. There's no way they'd graciously accept responsibility to rebuild your 20+ year old 1FZ to the tune of $5-7k. The only thing you're getting by using OEM filters is the assumption (piece of mind?) that their quality control is to a higher standard than aftermarket filter producers. As @beno has alluded to several times on here lately, Toyota is on a bullet train to GM-ville with bean-counters running the show, not passionate auto enthusiasts. I'd bet before long we'll see this exact same thread but with the Thai-made OEM spec filter. Well, maybe better put...it wouldn't surprise me.
Give me one example to support your claim. Not speculation. An example of Toyota turning their back on a customer due to failure.
Look at what the two companies have to lose. Then realize the absurdity of your claim.
Wix loses your filter business. 3 filters per year for the next 40 years. Call it $600.
Toyota loses your business. They lose service business. Used car business (Mr T doesn’t care about this but the dealership does). New car business. Parts business. Over 40 years that is potentially tens of thousands of business. PLUS the negative word of mouth.
the bed and taken out good motors, but it sure seems Wix filter failure on the 1FZ is a common thing now.