Yes, getting rid of the various savings time is important too.
All the people pointing out the (genuine) problems with decimal time seem to be weirdly tolerant of the problems with our current system, which has much worse problems.
If you imagine the reverse situation, where society uses a decimal time, and some people are arguing we should switch to this system because despite all the things it makes worse and harder, it divides better and the numbers map somewhat (although imperfectly) to the actual time-of-day in various locales and (even less perfectly) to the kinds of things people might be doing at that time, everyone would think they were crazy.
All the people pointing out the (genuine) problems with decimal time seem to be weirdly tolerant of the problems with our current system, which has much worse problems.
If you imagine the reverse situation, where society uses a decimal time, and some people are arguing we should switch to this system because despite all the things it makes worse and harder, it divides better and the numbers map somewhat (although imperfectly) to the actual time-of-day in various locales and (even less perfectly) to the kinds of things people might be doing at that time, everyone would think they were crazy.