I work for a company that makes some of the technology used to make computer chips for cars/appliances/etc. I have some knowledge on how the certification process works for corporations that make the chips themselves. just a bunch of hearsay of my own opinion.
But this article does go over it a bit, while talking about why they don't move to newer, more efficient manufacturing processes:
MSN
Basically Pre-Chip Shortage, chips hit a quality standard minimum based on federal standards AND then some automakers upped that quality based on their company standards/reputation whatever. they use an older process called 'lithographic' designed wafers.
During chip shortage we have seen automakers basically start accepting chips of lower quality, but still hitting that minimum safety/federal requirement. This is like accepting a wafer with a scuffed edge, or having a wafer with 10 chips and 1 having a bent cap, etc. and in the past they wouldn't accept these, now they do. Like so:
Toyota embracing small flaws as supply chain pressures bite | Reuters and so:
Toyota OKs Use of Imperfect Parts to Keep Production Going
are they putting in bad chips? definitely not, especially since toyota initially stockpiled electronics, but personally, I trust them a bit less than wafers produced pre-shortage. and definitely wouldn't recommend any 1st year models that was released during the shortage.