In many (most?) companies it also takes nontrivial amount of time to patch potentially affected systems. In my company half IT department got recently an email that we need to urgently patch all Windows servers because of some critical CVE. I checked it. The description was maybe 3 lines and it said this affected domain controllers only. I raised this with security team and they said that in this case we don't need to patch everything. Now if we had to do this, it would force us to spend nontrivial time on unplanned patching. That this in itself disorganizes our operations can not be ignored. So comparatively me doing some legwork and checking the CVE was trivial effort and saved a lot of busywork for the department as a whole. That time we got lucky.