There really is no bandwagon to jump onto here—most sites don’t prevent zooming in. Many that do were just misconfigured from the start, and because some popular mobile browsers ignore `maximum-scale=1.0`, the issue isn’t normally identified.

Quick tip: Make sure all of your inputs are at least 16px font size. This will prevent most mobile browsers from “automatically” zooming in when an input is focused ;) Which is a common reason people employ the maximum-scale property.