What is the current state of Marine Corps Discipline?

During my time in our Corps, we often referred to the "10%". Generally, the 10% were primarily enlisted, but included some officers, who had never really bought into the "program". Their transgressions ranged from being a general pain in the butt, to exhibitions of non compliance to regulations and expectations that warranted administrative release from the Corps or formal disciplinary action. As a young Captain and MAG adjutant, I witnessed the wrath of the Corps on another Captain who was involved with civil authorities one night. When the individual's Commanding Officer reported the incident to the Group Commander, he told me to get the Wing Commander on the line. I did so and overheard the Colonel telling (not asking) the Wing Commander (MGen) that he wanted the authority to release the individual immediately. He summoned the offender to his office, then sent him back to his quarters to change into a more presentable uniform. When the officer returned, the Colonel advised him that he was being released from the Corps, removed his rank insignia as well as his EGA, declared him persona non grata and had the MPs escort him from our office to the gate.

Since I left active duty in 1989, I have had many opportunities to return to Camp LeJeune and Parris Island to visit family and friends, as well as for official functions where I had the opportunity to talk informally with officers and enlisted. While social media and enhanced news coverage often paints a picture of disarray and lawlessness in our military, I can say that my observations and discussions with active duty personnel leaves me with a different impression. The Marines I have talked with are just as dedicated and faithful to serving our nation as any I served with. The young officers are just as eager to lead Marines and the enlisted display the same enthusiasm and dedication. Overall, they are better educated (many enlisted with college degrees) and just as committed to honorable service as the 90% of Marines I was privileged to serve with.

I think your previous post and its comments were headed in the general direction of culture. The Marine Corps does a fantastic job of selling the image of being a highly trained, disciplined and proficient fighting force. It becomes so ingrained that exceptions to this norm are so abhorrent and counterculture it breads more compliance. So when leaders are tasked with maintaining the standards, they take a more serious approach to breaches of discipline. More punishment, discharge, etc whereas the Army might be more tolerant, or have a way more graduated approach to discipline problems.
I am not saying the Army doesn't have good leaders by and large, but the two cultures are different because, I believe, of the functional role of both branches. In the previous post, a lot of SMs from combat units in the Army felt that discipline was higher in those functional areas, so maybe that lends support to the theory that units, irrespective of branch, that primarily depend on the ability of its SMs to follow orders, foster a higher expectation of discipline.
I think that stereotyping each branch in this way, however, may not lead to a good analysis on which branch is more disciplined depending on your definition. I think the definition you use will change your conclusion because evaluating that will be subjective.
Is disciplined the ability to follow orders? Complete the mission? Keep boots polished and the floors waxed? Blind respect of rank?

Maybe you should be asking about the state of Navy Seal discipline. From what I heard on the news, some heads are gonna roll. Shame for such an elite force.