Of course it impacts the user... And if Epic was found doing something illegal and was shut down or bankrupted, that would also impact the user. Your over-simplification that it's a "business disagreement" is disingenuous and incomplete. The signature revocation system you're claiming is simply to "protect their business model" is the same system that allows Apple to immediately shut down any malware that makes its way into the App Store inadvertently. It's the same system that's been used in the past to protect users from private key leaks.

The only anti-consumer behavior in your situation came from Epic who knowingly violated the rules as a PR stunt.