That relies on the common fallacy that both sides of any given political binary are "the same" by default - i.e. that if you believe anything about Republicans,

That relies on the common fallacy that both sides of any given political binary are "the same" by default - i.e. that if you believe anything about Republicans, and you don't believe the same thing about Democrats, or vice versa, that you are a hypocrite almost automatically. But of course you need to state some kind of opinion or argument that X is the same as Y - it's not true by default. If a Democrat (or Republican) did the things Trump does, I would expect and understand for people to accuse that Democrat (or Republican) of acting like a toddler, or whatever. That doesn't mean you should or that it's a good thing, but it's understandable and not hypocritical.