Of all the sick, twisted, and outright stupid data formats I've ever had to deal with, YAML has to be the absolute worst.
A single space out of place will make the whole document invalid, and the parser will blame a perfectly innocent piece of code several hundred lines down. Editing this mess is fraught with danger, and rapidly turns into a game of whack-a-mole. "Fragile" doesn't come close. Combine this with Ansible, and today has been truly awful. Tomorrow isn't looking good either.
I had a perfectly good shell script, but... reasons.
Let him that hath understanding count the number of the beast:
For it is the number of a man; and its number is One hundred threescore and twelve.