Except the average league height isn't getting taller:
“You can’t teach height” - Red Auerbach We spent 2 months
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Only PGs are getting taller, every other position has been on a down trend since the early 2000s.
I see a team here running out two Cs, two PFs, and a SF. Of course they're tall! They're the tallest starting lineup in NBA history, but they're just one team and not representative of the league. Besides, it's a starting lineup gimmick. Adams played under 14 minutes a game last year. Do you think they're going to ask Kevin Durant to guard SGs 20 minutes a game?
Meanwhile, the Kings went out and drafted a 6'7" guard and a 7'2" center, and extended their 6'9" SF, so it's not clear what else they could have done heightwise. Even their new 6'4" backup PG is bigger than average for his position. (Except when he's playing PF.) There are 29 other teams out there also trying to be as tall as possible while still being talented, so it's not like we can just vacuum up all the tall guys and call it a summer.