I feel like I would have agreed with Google had they just argued "This is our private store. We did all the work to build it. We control the rules. If you want to make the Epic Store apk, you can. Sideloading is an absolute possibility. No hacking needed."
I would agree with that.
Instead they argued by Epic charging money without giving google a slice, it compromises users safety and the innovation of the platform.
Fuck
Off.