The way Harvard works is that they'll do anything they want, whatever the reason is on the surface may or may not be the real reason. Back in my earlier years, I was given offers to a bunch of elite schools, Harvard included, since I was the poster child of a poor, inner-city disadvantaged kid who did extremely well at academics and was college-ready several years before your average student... basically, their main goal is optics and money. In the end I turned them down, because it was painfully obvious how conceited and superficial they were with my interactions with their administration, and exactly because of my background those types are a real turn-off and are not trustworthy. In my eyes, they acted in a very similar fashion to the leadership in the gangs where I had come from (sans the violence): they're just using you for their own ends and probably don't give a damn about you as an individual. Maybe it was showing my naivete at that time for not sucking it up and just attending there, but I honestly don't regret it at all, although having multiple offers to different schools made the choice much easier.
While this was decades ago, I haven't seen much that would cause me to change my view of them... if anything, they're probably worse from the news that comes out of that place. Obviously, not every single individual at the institution is/was like that, but there was a pervasive mentality and atmosphere of an elitist crowd when it comes to a swath of the students and faculty. To that end, as long as you're connected and fit their stereotype, you could do anything you want w/o repercussion. In the specific case of this news story, I can 100% guarantee there are students at Harvard who are known to the school and behave at the same level or much worse than what's getting this kid kicked out, which is why I can pretty much guarantee that his comments/behavior while gaming is at best a secondary reason for having his acceptance revoke.