Sure, but that same reason was used to argue against the introduction of the OTL metric system, but we seem to have managed fine.
I was referring to numbering systems, not just metric systems. My point is that a 10 based metric system is very practical when you have ten based ciphers and numerals already deeply ingrained in place, as it was the case, though has other disadvantages relative to duodecimal, unless you want people to re-learn the numbering system as well (let's leave alone the numerals as words for now). Which will give you a more practical coherent system overall in the end, but is quite a huge change that requires a lot of effort and resources. I think that economically it would not be worth it, and you have a faily long and awkward interim period.
Another point is that while measurements were not universal standards, decimal numbering already was. Changing a bad standard is usually more difficult than creating a new one. They chose to create a new standard, and understandably based it on the most standard at hand.