> Microsoft thought it was easier/better to rewrite minecraft in C++ than port the jvm to the xbox.

I don’t think that’s quite right. IIRC, the mobile iOS version was released before the Xbox one and neither were developed by Microsoft. I think eventually it’s the mobile version that became Bedrock and replaced the older console version, which became a dead end.

The mobile version (released in 2011) could not be in Java, otherwise it could not have been sold on iOS. So at least initially it was more a business decision about which platforms to target than a technical decision to do away with Java.

All this happened years before Microsoft bought Mojang.