We cannot vouch for the numbers ourselves, but there are issues with the latest reference AMD graphics cards (RX 7900 XTX), mostly related towards failing vapor chamber cooling. 

Because of temperature issues and that broken refrigeration system, the vapor chamber seems to have too little liquid. The cards that run into issues report back temperatures up to 110 degrees Celsius, reducing their efficiency by 20 percent. AMD cannot replace faulty RX 7900 XTX cards as tyhey're running out of stock—it takes at least two weeks to ship replacements, and the company has repeatedly said it cannot provide a replacement date—which does not help matters.

In a recent interview, Scott Herkelman, senior vice president and general manager of the company's Graphics Business Unit, said that just a limited number of cards were affected. RMA instances are 9–11% per thousand of cards, although they should be less than 1%; several AMD partners (AIB) are reporting the failures. Users who have been unable to obtain a new RX 7900 are likely to accept a refund

AMD RX Radeon 7900 XTX (reference) Failure rate would be 11% opposed to 1%