Wireless is no substitute for wireline, this much is undeniable.
How, though, is it relevant to a discussion of how to divide scarce spectrum between competing wireless use cases(doubly so when both of them inhabit markets shaped in part by a semi-substitutable wireline implementation of the service they offer)?
The question isn't whether wireless is the future (it isn't, and anybody who says it is is probably lying to save on capital investments) but whether broadcast television is the best use of an unfortunately finite natural resource; and, if it isn't, whether we owe broadcasters some sort of dignified exit strategy or whether we can just kill them and get on with our day.
Personally, I'd be the first to agree that the default 'Sell to Ma Bell or The Exaflood will eat your babies or something, something' policy is utter bullshit. Given the notable successes of ISM-band wireless protocols, despite the fact that the ISM band is kind of a slum, I'd advocate letting the poor telcoes suffer with their 4G and allocating more relatively unencumbered spectrum.
However, I'd also be the first to axe broadcast television as an institution, leaving not one transmitter upon a tower, to free up that additional spectrum. Broadcast TV is a howling wasteland and its arguments that it offers some sort of valuable public service aren't exactly getting more convincing as time goes on.