Not receiving gear because the RNG deities didn’t smile on me is one thing.
Not receiving gear because someone else won it instead of me is another thing.
If you are focused merely on outcome, then honestly there isn’t a huge difference between PL and GL.
If you are focused on feeling like the system is fair, there is a huge difference between PL and GL.
I have been playing long enough that I think ML and GL was always garbage and ripe for abuse, and I think that PL might not be as “exciting” but I think it’s more fair in the end.
I think that pre-made raids should be able to use ML.
I think that random “finder” groups should use PL.