Lina seems to have answered the reason why these operators dont appear in blueprint here. I still dont understand why the maths doesnt go on under the hood to make the front end more legible and not prone to issues like gimbal lock by automating the process of say converting a rotator to quat when certain operations are performed.
To elborate, I was performing a single once off addition of rotation on a single axis in a local space which is why I neglected to see the issue with world space cumulative additions on more than a single axis. Huge difference.