Is Using Airplane Mode on Flights Still Necessary?

> With most aircraft now offering wifi, there’s little practical reason not to switch airplane mode on anyway.

What’s that go to do with anything? If you can’t get a signal anyway, it’s not like using your data plan was an option. Airplane wi-fi (which is rarely “offered”, more like sold at a premium) is orthogonal to whether you should use Airplane Mode or not.