It wasn't just Bulldozer. AMD's foundry was never as good as Intel's, leading to all kinds of quality problems, and there would be compatibility issues once in a while. The fact that they dumped GF and are now on TSMC doesn't register. "We bought Opteron servers and they blew up, never buying AMD again," and that's the end of the story.
More recently, when Intel disabled AVX2 on AMD CPUs in MKL, many people assumed the problem was AMD. One colleague of mine was telling our customers, "Don't buy EPYC, because AVX2 is broken on those CPUs." Of course, then AMD's in-house alternative to MKL, libFlame, was a piece of shit, which certainly didn't help them any