Going past the OLM indication is not a good idea in warranty terms, BUT once you are out of warranty it might be worth considering IF you monitor actual real world results with a few UOA's.
If your engine does start to click or rattle after several thousand miles from the start of an OCI, it's a real good idea to find out why. Most likely reason is fuel contamination of the oil, BUT it could also be that the viscosity of the oil was too low in comparison with how worn the main block is, assuming you are using the correct oil in the first place and the block has not sludged out etc.
Some high revving or race engines with hot running turbos will also shear their oil down, but that is not very common and tends to happen more with an engine that is overheating or is not run on conventional base oils.