Scientologists being involved with intelligence agencies doesn't surprise me even a bit, it makes a lot of sense as a CIA cutout.

Infiltration of government institutions has been doctrine for the group since the 1970s: https://en.wikipedia.org/wiki/Operation_Snow_White

Those weirdos followed me around Ybor near Tampa when I said something negative about them online in public. IT WAS WEIRD! But I gave no Fs

It seems likely that every tightly clique is trying to infiltrate every other such clique - it's endless battle between mafias, political parties, cults (Tulsi Gabard's connections to Krishna cult), intelligence agencies and so-forth, each trying to use the other.

But naturally, there significant limits on how much and how long each of infiltration be effective. A infiltrator from X sent to gain control of Y and gaining complete control there of will often identify with Y since leading it give them more power (Stalin was likely a agent of the Czarist secret police before the revolution but he probably wasn't taking orders from them in 1935 etc).

Any belief system or club that validates sociopathy as a "higher" state of evolution or enlightenment will worm it's way into intelligence agencies.