I'm honestly very skeptical that Apple actually did everything they could to make Java startup fast and the GC perform well under load. G1GC is a fine collecto

I'm honestly very skeptical that Apple actually did everything they could to make Java startup fast and the GC perform well under load. G1GC is a fine collector, but if pause time is really important they should have used ZGC. And if startup is a problem, recent versions of Java have introduced AppCDS which has gotten quite good throughout the releases. And if that wasn't good enough, Graal has for a long time offered AOT compilation which gives you both fast startup and lower memory utilization. None of these things are particularly hard to add into a build pipeline or deployment, they simply require Apple to use the latest version of Java.