This reads to me like mockery. As in, “Naked bike riding is the most dangerous demonstration so far.” Not dangerous at all.

Recently in the US, a murder suspect’s father told a priest, who tipped off the FBI, leading to the arrest.

The filament path does degrade. You want your filament to travel through your PTFE tube and nozzle with the smallest air gap possible (from extruder to nozzle- filament roll to extruder doesnt matter as much).

Due to wear over time, your PTFE tube and nozzle are both “wear items” like the brakes on your car.

Here’s a great article with photos of some new and used nozzles that have been cut in half to show the wear.