Chris Delikat presented iirc mostly practical reasons for open sourcing Ghidra, like interoperability with other agencies or non-government groups, at Black Hat 2019: https://youtu.be/kx2xp7IQNSc?t=1838
If the reasons presented were actually decisive can of course be questioned.
Okay I haven't seen this speech before. I guess we can actually trust the guy who worked at NSA at time to know their reason for releasing it. I mean Chris Delikat.
And yeah he does mention recruitment benefits on second slide.
If the reasons presented were actually decisive can of course be questioned.