About grep, all I see is a tool that looks for lines matching a query when I can't be bothered to just read the file myself.
I can trivialize useful software too. See how ridiculous you sound? That's what software does! It makes our job easier.
It's true that git-absorb guesses, but since you clearly haven't used the tool, you don't know how good it is at guessing. Moreover, false positives and false negatives are not the same in this scenario. A false positive would be very annoying, and I don't think that's ever happened for me in the years I've been using git-absorb. False negatives happen more frequently, but it's fine, because it tells you and then you just fall back to what you would have done manually for whatever it couldn't find a commit for.
