That's something, lol. I'm not irreplaceable but it would be an absolute clusterfuck if I left, at least for a while.
I do a good job of documenting everything but so much of my work relies on scripts that I wrote and never properly deployed - a mix of python and VBA, and all my reporting relies on an API connection that nobody else maintains and other than a handful of queries I shared, nobody really knows how to use it.
I'm not trying to be shitty but it's job security.