That's fair - and tbh most games don't need to push the envelope when it comes to performance, so it makes sense to just stay with the most flexible default opt

That's fair - and tbh most games don't need to push the envelope when it comes to performance, so it makes sense to just stay with the most flexible default option. Still, when you compare to something like ECS, which basically needs to take over your whole architecture and give up the flexibility of MonoBehaviours, it's much easier to burst-jobify a smaller, performance critical part of your game.