When choosing research, the game can warn you that it will not unlock some stuff because none of your pawns have the ideology needed to unlock the item. This does not seem to actually check for "any pawn" but probably for "main ideology".
https://steamuserimages-a.akamaihd.net/ugc/1841409905603435178/D896408B81F4E2AC7033E3A559BCAC34573444AF/
https://steamuserimages-a.akamaihd.net/ugc/1841409905603435480/01352E5B709F2C3FA4389A01CDAAB71266B73F09/
Here I tells me that I won't get transhumanist stuff, because I don't have a pawn with that. I do have several transhumanist pawns in my colony for a long time (the default ancient faction/ideology). It tells me the same for mind bend carpets, even though I do have a high life pawn. Of course everything will actually be unlocked. The warning is just not triggered correctly.
Both DLCs, no mods used.
Thanks for the bug report. Honestly I think the warning should just be changed, I never liked it. A generic 'this research unlocks things for x precepts' makes more sense anyway than a warning you may not get something from it. I'll bring it up with the devs.