I think the management teams see it as they see their own day. Work 9 to 5 is an 8hr day.
What they don’t see is the lunch brake they get, the numerous coffee/smoke breaks, the fact that a pilot day may start at almost any hr of the day or night. Even the ability to get up and walk around for a bit.
'I work an 8hr day driving my desk, the pilots should be able to do the same driving the plane.'