If I am gone, 10000, maybe 100000 people are at risk of losing their internet conection. Many of those are business customers, so there would be a domino effect on their customers too. Peoples lives get disrupted. People can't pay their bills, order food, at least not online.
There are a couple of coolleagues who could jump in but they are not 1:1 replacemets. And if they took all my work on top of theirs they would be overworked. I don't want my colleagues to be overworked.
Also there is a ton of pressure on me to keep things working. Yes, I am a network engineer. The internet stops and everyone is out of their mind.
So yes. Replace me immediately. Because people kid of depend o me. TOO MUCH.
The sad part really is… I die. There isa temporary blip in the internet(maybe hours maybe days), everyone panics. It gets fixed. Society moves on. Doesn't even blink.