Nope
I have been SLF on many occasions.
It reflects perfectly the crews problem with the task.
I am a professional pilot; my terminology includes
Grunts
Grockles
Bennies
Stills
Dogs
Survivors
Some of these are literally correct, some are descriptive, not all are derogatory.
I don't have a problem if the trolley dolly calls me SLF, just as long as s'he is prepared to be the TD.
And I still respect her/him for getting us out in in a crash.
Sven