The Tale of an Unfindable JS Error

I suppose this error only occurred for people that use Linux, installed this Linux specific Chrome extension, then change to a Mac or Windows desktop where the extension was automatically installed?

Also, is it the website owner's responsibility to solve errors like this? It would take a lot of time to fix other people's extensions. I suppose if everyone's using a particular extension, it might be worth dealing with, but then I'd hope that extension would be somewhat more stable.