Yes, but this assumes there is a problem with current Bitcoin denomination. There is no problem. Don't touch it and both 1% and 99% will be fine.

Touch it, and 1% (of real users) will be confused for long time, it will create friction. And 99% don't care yet and will be confused when they become Bitcoiners, because you would have to say "old bitcoin or new bitcoin" for years to come, you would have to explain that there was a change. And why?

I think it's even quite nice that you have this as a memento of how much Bitcoin grew. Now you need only 0.0003 to buy dinner!