the other thing with section 31, higher ups in the fed knew about them in the ds9 era. the question is now when do they go super covert and disappear off the radar in the 23rd century. In ds9 iirc admiral ross implied he knew they exsisted but didn't say outright. the other notion that bothers me is with the L'rell arc the federation via s31 is basicly engaging in nation building something that doesnt feel very federation like, especally with the later fed vs klingon cold war of sorts in the post discovery/tos kirk era.
Voq knowing about them is the biggest sticking point for me. Okay maybe Captains know about them because they need to know. Okay maybe Discovery knows about them because they were also a super secret operation. But Voq. How would he know? In the short time that Ash was on Discovery? I don't buy that.