Earlier quoted context omitted.
"Not sanctioning them because "oh there's a chance maybe one of them actually doesn't like the guy" is an idiotic move. " Given recent russian history of fights between Putin and various oligarchs - I rather think it would be a idiotic move to target them all without due process - because the chances are actually quite high, that many of them oppose Putin.
We're not imprisoning them, we're freezing their riches. This gets more of them to oppose Putin. And several are now having to come out publicly speaking against him. This is how we're helping a coup d'état happen. It's a good and solid strategy. A lot is riding on this.
Ok, I would be somewhat fine with it, if it is only "freezing". But still not without some form of process, that shows links of them to the government, or support/benefit of the war. Because otherwise this sets a (further) dangerous precedent. There was something called, "rule of the law".