What were you referring to, other than microcode?

Edit: Oh, you mention the encryption. Big companies love obfuscating everything they create, because they're afraid something commercially sensitive will exist there and someone will copy it and outcompete them. I agree that this is ridiculous, but I don't think it's evidence of any sort of nefarious activity.

It's not evidence, but it may well have been used to hide such evidence.

Well yes anything that's encrypted could potentially turn out to be evidence of a crime when decrypted, but we don't usually assume that the use of encryption is indicative of that

For criminal cases. But this is not.

Yes, because large corporations never commit criminal infractions, or admit any wrongdoing. They just happen to settle with regulators as cost of doing business.

Microcode spills lots of the secrets of the hardware design, so you want it encrypted for as many years as possible to keep your trade secrets out of competitors’ hands.