I wouldn’t go that far - this guy is far better than some in their past.
This doesn’t interfere with anyone’s ability or freedom to worship as they see fit. It simply requires the “Orthodox” church in Ukraine to be transparent on which branch of the Orthodox Church they are beholden to - (it’s part of the growing Ukrainian nationalism). Either you are formally under the Ukrainian Orthodox (separate from the old Russian Orthodox jurisdiction), or you continue to identify with the Russian Orthodox headship (and be looked at by citizens - especially the more nationalistic - as suspect.
Seems perfectly reasonable. It’s no different than having Jews wear stars to show who they are beholden to as well, as part of a growing German nationalism.