There are so many great quality parts available from US suppliers, for a couple of bucks, there's really no reason to be buying banana plugs from Ali in the first place. IMHO. Now there may be many other valid reasons to hate tariffs, but this is not one of them.
This is an interesting point which I cannot verify. Are most of the parts needed in audio available from US suppliers, and so the question comes down to cost alone? I am not on the repair or manufacture side of things, so I don't know.