The way the game is played has changed but that doesn't mean its a useless stat. Its just like a hat trick in hockey.
In 2008 there were 65 total hat tricks in the NHL. Last year 115. Just because players are getting more triple doubles now it becomes over rated? NHL players are just looking for hat tricks these days so we should ignore that stat.
Huge difference between the two.
For one, more shot attempts overall and especially more three point attempts results in more rebounds being collected overall from missed shots.
The rise in offense and rules to ensure more offense has also seen a huge rise in scoring, thus resulting in more individual points being scored.
There's a reason why double doubles used to be valued quite highly and triple doubles were rare. Now, triple doubles are more akin to double doubles in their likelihood and achievements.