A little tidbit, and I of course don’t have any proof to back this up but: for the eligible Mac models to qualify for a free mlb replacement from apple, the computers HAD to fail a specific diagnostic (called VST - video systems test). The repair couldn’t be classified as “covered” unless there was a record of this test failing. I’m also certain that privately nvidia agreed to cover the cost (or some of the cost) of these repairs, but stipulated they would only cover the computers that failed the test. Most computers did fail the test, but I definitely saw some machines that absolutely were experiencing gpu issues but wouldn’t have been eligible (most of the time Apple did the right thing and paid for it out of pocket)

Sorry for rambling! Just thought it was an interesting tidbit