As you continue to update through 1.15, 1.16 and it seems like beyond, you're continuing to kill the game and do everything the community is asking you not to do. Stop making render changes that make mods like Optifine impossible to maintain, you're not helping anything. Care a little more about performance, care a little more about server performance. It will go a long way. In-House features, specifically relating to entities and performance is atrocious and requires the community to make mods, plugins, and custom server jars to remedy the carelessness. Please take a step back and talk to the community. Meet with the developers, meet with the mod developers. Java is not dead. Java is growing.