Yes, in an ideal situation there would be no tariffs, which would remove the possibility of any government picking winners and losers within their own country or anywhere else. And no need to identify certain industries that might need protection or some other euphemism for protection or favor. That probably depends on the other side going along with the same philosophy, all the time.
I don’t think tariffs are a bad thing. They just make a hell of a lot more sense if they’re imposed uniformly on ALL imports from any given trading partner.