So far as a pilot being threatened with losing his/her job if he/she refused to fly an unsafe aircraft, well, I just couldn't even begin to contemplate that scenario ever happening. This is just unfounded scaremongering and if you know otherwise I suggest you report it.
I implicitly trust the flight crew operating each and every flight that I and my family board, I'm confident their highest priority is safety without compromise of any kind.
It isn't just pilots under pressure.
Dispatchers and engineers are all being pressurised to avoid delays.
See how much compensation you get when the aircraft takes off out of trim due to incorrect loading or a hastily signed off tech problem, and piles in over the threshold.
This will all end in tears.