I think so, I've tried it with 3-4 ladies in heat/ on risky days after getting max love/lust/affection, although I haven't set anyone as a love target yet. I don't know the GranBlue races that well, but I think I've been purusing Erunes and Draphs so far. I'll have to try some more, I'm not sure what the "other conditions" mentioned in the screenshot are, but I asked because the message I got seemed very strict in terms of inter-species children not being possible. I'll share a screenshot of what I see if I hit it again.
EDIT: Here is a screenshot of what I'm seeing. This was after ~7 rounds on a super risky day. The English translation says:
"Inside Societte's uterus, W's sperm are desperately swimming towards the egg...
However, pregnancy does not seem to occur between different species."
I've had the same thing happen 5+ times even after more than 7 rounds, and got a stronger message than "desperately swimming" when I did that. However, the second message "However, pregnancy does not seem to occur between different species." has always come up for me so far.
Maybe it's just a super low odds thing; I know I'm kind of spoiled by the transparency TW has when using the detailed preg chances display cheat.
(Also, this was with Latent Blood on, so while I guess it impacts offspring, I'm not sure it helps with actual impreg)