Manjaro repos being different from Arch make it more stable and user-friendly, but to delay packages is also to delay new features and bugfixes. There was a bug introduced on the latest stable where chromium doesn't play youtube videos if your hardware supports VAAPI VP9 hardware acceleration, it was fixed on arch 6 days ago, but the update has still not come to manjaro.
I found this topic but it's for manjaro-specific packages only. So the question is where to ask for bugfixes updates from arch?
But since i'm contradicting myself because i'm making an update request right now it could translate to asking for an "official" or centralized way (topic/category) to make such requests.
I don't see (i'm not saying it doesn't happen) the Manjaro repos being used to skip updates that would introduce bugs waiting for a bugfix from upstream (and applying the necessary security patches in between) and then pushing the fixed update to stable. Rather, arch updates are being delayed just for the sake of being delayed, and then you call it more "stable" than arch, while still having the trouble to make sure security updates are delivered.
Don't get me wrong, i love this distro and the efforts you guys put into it. I know mostly i'm ranting about is kinda impossible to solve because lack of manpower and the rolling release model. This is just how i see what's happening with manjaro way of dealing with updates.