The French did try it back when they were in the process of changing to the metric system in the 1700s. Even THEY quickly determined that, much like the creation of the universe, it was a very bad idea. And it was very quietly dropped. French tried hard to scrub that moment of insanity from the history books. But well, the internet is truly forever in both directions I guess.
Metric time quickly got out of sync with the periods of light and dark. Mother Nature evidently doesn’t like humans dicking around with the time periods of her celestial movements. (Dozenal for the win!)