About lowering the use of device barriers and Java edition

The Android version of My World is getting higher and higher, and I find that I can no longer play the version above 1.20.0. If the device threshold is not lowered, more and more people who use old devices will not be able to play. Secondly, I don't understand why the bedrock version and the Java version should attack the system separately, because the Java version is closer to reality. Maybe the separate attack system is the compensation for the bedrock version, then we can try to separate two versions, one using the Java version to attack the system, the other using the bedrock version to attack the system, the achievement system and so on