I agree.
Although PDJT wasn’t talking about computer processors per se, he recently said that things are too complicated (paraphrased).
In fact, some recently discovered processor vulnerabilities weren't discovered until roughly a decade after processors were introduced to market.
From the beginnings of ic manufacture there have been little surprises that have popped up, known as undocumented op codes.
The process has only gotten more complicated and regardless of how well they design and plan the manufacture, there’s always that precursor of “well, now we just to see what the silicon does.”