“Zelenskyy is Jewish therefore there is no Nazi problem is Ukraine” is logical nonsense. It’s a quick quip but it doesn’t hold up to any scrutiny whatsoever.

It’s also not of any value to anyone to assert that people arguing against you must be arguing in bad faith, or are themselves fascists. If something specific can be pointed to that makes either of those seem likely, call that out. Otherwise you’re trying to shut down the conversation, not have real discussion.