I suppose any argument in the internet can feel hostile if you care about the subject, but my apologies for any distress I may have caused anyway. My message is not intended to be about whether you are wrong, but whether the example you gave is valid. I did read your explanation, and I find it mistaken. Let me rephrase my argument, and you can point out the part you think is wrong.

If we say that a problem is caused by half-assed adoption of X, it implies the problem can be solved in two ways: (1) Properly adopting X, or (2) Reverting back to no adoption at all. The example you gave can only be solved by 1, because it is an inherent problem of the imperial system. If you take metric out of the equasion, the situation is not affected. While you may have meant to say "the imperial system has problems, let's use metric", one can also understand it as "the transition to metric is causing problems, let's stop it".