http://www.dtic.mil/dtic/tr/fulltext/u2/291052.pdf
It's long, but the short version is that moly....
promotes corrosion under many circumstances
increases wear (except under very high loads)
increases friction (except under loads that break down the boundary layer of the carrier grease)
This is an extensive study , done by the US military. Pretty reliable data, you'd think..but who's seen these problems showing up in airguns lubed with moly?
This article seems to address the history of MSO2 and reports of corrosion from back in the day
https://books.google.com/books?id=9TRg1pkOkTsC&pg=PA306#v=onepage&q&f=false
The army tests are focused on rotational bearing loads, which can be millions of cycles.
For a springer, we're talking a few thousand cycles. Very different animal.
When mixed with a corrosion-inhibiting grease base, moly fortified lubes have done the job for springers for decades. Honda doesn't sell junk.
But if you really don't want any worries -- go Krytox.