I like Michael Saylor but I do not like what he says this time. In that interview, he did not say a meaningful reason he is supporting Bitcoin Knot. But he did not mention Bitcoin Knot, he only indirectly comparing Bitcoin Core to smaller ones like Bitcoin Knot, using big government and small government as an example. That small government become big and make more laws. He was referring to Bitcoin Core developers making more laws that may harm bitcoin.
He also said that segwit is like inflation. Do not get him wrong, he used inflation to just say something that is affecting bitcoin negatively because he thinks segwit only deprive miners from earning more money from bitcoin mining. He did not know or maybe he has forgotten that it was miners that signal for the upgrade to the network and that is beyond the power of Bitcoin Knot developers and other developers. If miners turned against the upgrade, it would not have happened.
About what is happening recently, I do not know what Bitcoin Core developers are doing wrong but some people will just prefer to against any further upgrades. I think Bitcoin Core developers is thinking more about the future of miners and which is not bad.