[luzifer42]

One big issue is that if a YAML file gets truncated for some reason, parsers generally don't complain.

[baby]

Never thought about that, but indeed there is no termination string. I guess the same is true for python

[rileymat2]

Isn’t that true for many or maybe a majority of formats?

[idbehold]

Not for JSON or XML which both require closing any opened bracket/quote or tag.