Perhaps because it's not about one crew member not being NVG current for a couple of days.
I suspect the pour soul(s) who are denied a rescue, or face a significant delay, don't really care why a particular callsign is unable to attend. The fact remains that bases are routinely declaring non-NVG capability despite the new service being sold to the public as "better" than the one it was replacing. It may well be in time but that doesn't excuse the less than ideal situation in which the UK SAR service finds itself. And before I inevitably get accused of whinging for the sake of it I'm not, just stating the facts. Senior people who hold gravitas within the SAR community (both civilian and military) read this forum. If we all toed the party line and harped on about how great everything was then they would be getting a skewed picture of the reality.