That's the trade-off. Predictability and determinism vs development and testing effort. The memory work remains the same, you can do it yourself or let the GC

That's the trade-off. Predictability and determinism vs development and testing effort. The memory work remains the same, you can do it yourself or let the GC handle it. For 99% of applications, the GCs are good enough and getting better every year, but low-latency still needs predictability and would ideally choose manual memory management. The realities of the job market and IT deployments are different though and that's why we still have JVMs involved with low-latency scenarios because of talent, tooling and productivity.