Was Haman Hanged or Impaled?

Some KEC talks this year from Esther touched on this idea: Was Haman Hanged or Impaled? by Benjamin Shaw | Ligonier Ministries Blog:

In the work of the Greek historian Herodotus, impalement is regularly presented as a Persian punishment (see The Histories, 1.128, 3,132, 3.159, 6.30 as examples). Given the setting of Esther, it thus seems likely that the manner of punishment for Haman was in fact impalement. In other words, the fifty-cubit “tree” built by Haman was intended to display Mordecai’s body impaled in such a way that no one could avoid seeing it. As it turned out, however, it was Haman, whose death (and the folly leading to it) was put on display for the entire population. This view is also confirmed by both recent commentaries (by Jon Levenson, for example) and by older commentaries (Keil and Delitzsch). In this case, I think the TNIV and the NLT to be more correct in their translation than the ESV or the NASB.