On the flip side, zero-day WebKit security vulnerabilities require a full OS update to patch Safari.
From a security perspective decoupling from OS updates seems advantageous.
Re:macOS Sonoma is available today
by angulardragon03 on Tuesday September 26, 2023 @02:03PM
(#37663356)
RSRs [1] are sort of not this though. They’re still a bit weird, but can contain updates for WebKit and/or Safari in a very small update that installs very quickly. Also worth noting that WebKit is buried pretty deep in macOS (as it underpins a lot more than just Safari) so isn’t as easy to patch by itself.
[1] https://support.apple.com/en-mk/guide/deployment/dep93ff7ea7...
They might also see it as an incentive - perhaps new app features act as driver for OS adoption.