Agreed. Dead Baby comedy is, like, a really far gone version of Black Comedy.

Dead Baby Comedy was pretty vaguely defined, and was effectively being used as "Black Comedy only I think it's horrible" and "jokes about dead babies".

What you're describing (taken too far and that's why it's funny) sounds like Crosses The Line Twice, to me.

Yeah, I remember parts of the forum discussion and the difficulty in distinguishing them, but the decision to merge doesn't really make sense.

The merge seems to work very poorly, especially since there's no mention of the term "dead baby comedy" in the trope description, and there are plenty of examples from the Dead Baby Comedy page that were just dropped in, even though they reference the separate concept and were written with the perception that it was distinct from Black Comedy.

I think Dead Baby Comedy is a separate trope - as the page description for this shows, Black Comedy is when there's humor made out of death but it's still treated as serious subject, whereas Dead Baby Comedy abandons all pretenses - but I don't know if it needs its own page when there are other tropes that cover the same concept, such as Refuge In Audacity.