If this meets code then i will be running attic wiring in this manner from now on.
Disturb attic insulation to run wire.
Put on safety goggles gloves and a mask to protect yourself from drywall debris and the fiberglass insulation then cut a hole in the drywall with a.
The following links will assist you with your electrical question.
How id do it if you put your cables to the edge where the apex of the roof meet the ceiling so you basically end up with your wireing loom at the edge of your attic then clip your cables along the ceiling joists 50mm from the plaster board then its clear of insulation and if you need to lay a floor you can but do try to avoide drilling hole through the joists as you will not meet the.
Yes this should be corrected and it would be good to have the wiring and all the circuit connections inspected as well.
The attic wiring should be protected and secured to ceiling joists or other wood structural supports.
If there is access above the light in an attic or kneewall space you can remove the wire from the existing fixture box and install it in a junction box.
With a flashlight examine the attic and locate the path that you will use to run the wire between the two locations.
Trace the outline of the box onto the wall.
Climb through the attic access using a ladder if necessary and look into the attic space.
A pull down attic ladder does not count.
You can then splice on a new piece of wire make sure it is the same wire gauge and run the new piece from the junction box back to the fixture box.
Whenever i do attic wiring i remove the insulation and staple it to the ceiling joist.