My entire point is: what determines that it's necessity? None of the updates included fixes to critical bugs or security flaws AFAIK; they were incremental imp

My entire point is: what determines that it's necessity? None of the updates included fixes to critical bugs or security flaws AFAIK; they were incremental improvements in stability. Who is determining that patch 1 needs to go out rather than being rolled into patch 2? On what basis?