GObject warnings: keep or revert warning -> critical change in 2.74.x branch?

!2852 (merged) turned most GObject warnings into critical warnings. I agree this is a desirable change, but is it a desirable change to make in a stable branch between 2.74.0 and 2.74.1?

If it is not, then we should revert it in 2.74.x before %2.74.1, and keep it intact in 2.75.x.