Unfortunately, many conservatives have embraced this sort of binary thinking: If it angers the Left, it must be virtuous. Undoubtedly, that’s a crude shorthand for political thinking. It means you never have to check the ideas of the speaker, you merely have to check how people respond to him.
That’s dangerous. It leads to supporting bad policies and bad men. The enemy of your enemy isn’t always your friend. Sometimes he’s your enemy. Sometimes he’s just a dude sitting there minding his own business.
You don’t have enough information to know.
The logic of “if he melts snowflakes, he’s one of us” actually hands power to the Left, by allowing leftists to define conservatives’ friends. It gets to choose whom we support. This isn’t speculative. It happened during the 2016 primaries, when the media attacked Trump incessantly, driving Republicans into his outstretched arms. The media’s obvious hatred for Trump was one of the chief arguments for Trump from his advocates: If, as his detractors claimed, he wasn’t conservative, then why would the leftist media hate him so much?