Honestly I don’t know. The order-of-magnitude performance difference in deferring the flush feels worth it to me if the risk is mitigated to sudden power loss.

I would think when the last of Apple’s hardware moves to ARM they’ll ensure there’s enough onboard battery to ensure the flushes happen reliably across form factors even if there’s a power cut.

If anything, now that the reason for the performance difference has been identified, I’d hope to see numbers for Linux and Windows storage access come up to par with these numbers as they go down this road too (e.g. via the NVME flush toggle mentioned in the article).