While you're voting this up, consider that for years people have sniped at privacy tools, most notably Signal, for accepting OTF grants, claiming that doing so compromised them, or even indicated collusion with the USG. That was always, bluntly, a horseshit argument, and OTF is probably an unalloyed good thing. But, still.
"Don't it always seem to go / That you don't know what you've got 'til it's gone"
As a European, and a beneficiary of an OTF grant, I concur: they are up-front about what they want, and my interaction with them didn't even hint at a hidden agenda.