Why are lighting disconnects only required on fluorescent fixtures with double-ended tubes? There are other types of fluorescents as well as LED's that have ballasts/drives that will need servicing throughout their lifespan. If shutting off the light switch leaves the room in complete darkness, most will service these fixtures hot even without a disconnect. How can this be considered acceptable? What does a "double-ended lamp" have to do with anything?
It is an interesting question. Maybe a proposal is in order if you can make the case. I think the low fruit on the original proposal was office buildings with long rows of tubes that typically get serviced while they are powered on.
Perhaps the thing about double ended types is that the pins on one end of the tube can be inserted whilst the free end can be touched. Indeed there is a temptation to touch the free end pins to check the horizontal alignment to ease fitting the first end.
I don't use the pins to check the alignment, but there are a couple of flattened spots where the metal end meets that glass that face straight down (or up) when the tube is rotated to the correct position that I use all the time.