As a LAME, i just accept that no one thanks me for ensuring the aircraft i inspect and repair are safe to fly. Certainly I'd say its very rare for a pilot to say hey man thanks to keeping our aircraft safe to fly, your the best.
If can be honest i get plenty of groans and moans when i fix an aircraft faster than the crew expected while they watch their duty hours tick by hoping it runs out before the aircraft is fixed.
While speculation is just that, after an accident or incident speculation is rife, and the first thing to be assumed is that something has gone wrong with the aircraft. Some lazy tech has done a dodgy repair.
So by asserting that the crew has done nothing wrong asserts that someone else has.
The basis of all modern aircraft designs is that no single failure should cause an aircraft to crash. Multiple compounding failures are incredibly rare.
So to me its swings and round abouts.