My understanding is that the difference between 5G density/localization and that of previous technologies is quite substantial, especially in urban areas.

"The extension of spectrum range has an impact on the network architecture. mmwave cells will employ shorter ranges of around 100-to-200 meters which will require extreme densification to provide high coverage. 3G networks reached densities of fourto- five base stations per km², 4G networks eight-to-ten per km², while 5G networks could reach densities of 40-to-50 per km²."

https://www.newtec.eu/article/article/choosing-the-right-con...