He's into tai chi being a living breathing, changing tradition. He often says that his fellow students of Zheng Manqing sometimes argue about who is doing the "real Zheng Manqing style", but that from his point of view 1) none of them are, because their all doing their own style, and 2) that there is no ultimate fixed singular right way and that we have to constantly test and improve things and do your own research, both for fighting and for teaching.
I find his articles interesting both for the bio-mechanical ideas, and for his emphasis that competitive fighting/pushing is the best laboratory to test out if what your thinking about works and also that when your opponents fight you they use their best techniques and don't hold back or hide anything, so you can receive their technique and learn
I think Mr. Chen's outlook is spot-on. You'll have a great time.