What a strange article.

The real issue is that 5G in 24–86 GH region has a range of about 1500 m, unlike LTE (and 5G in the LTE bands up to 6 GH) with a much longer range. So think of 5G more as a small-cell mesh technology -- I doubt you'll see it outside urban centers except for marketing -- your "5G" phone will continue to work but only at LTE speeds & bandwidth.