Despite some important criticism, I think this article misses an important factor.

The benefit with the MBTI is showing employees that people think differently from them.

Yes, we all know that, but we still need prompting and practice on it.

It's best as an exercise to highlight "I need to consider this person's perspective and take that into account". Flexing that muscle is incredibly useful, even if it's a somewhat arbitrary exercise in itself.

However, I think approaches such as "User Manuals" do that better.