Tell that to Vermont. They’re doing both, for as long as they can 😂. They just added smaller milepoint signs in 2020. They do have a point, in regards to business names. Heck, there’s still even a Exit 5 Motel in Saco. And we’ve had mile marker exits for a loooong time.

https://vtdigger.org/2020/07/07/vermont-buys-time-with-new-smaller-highway-exit-signs-%EF%BB%BF/ https://vtrans.vermont.gov/projects/exit-numbering