Ever lose your airspeed in flight? The nylon lines held in the “push-grip” fittings must have some flexibility in them so they aren’t pulled out, as in this case. An aircraft is a really high-vibration environment, and anything that can come loose will, most likely at a very inopportune time.
These push fittings look like a bad idea for something important like a pitot tube. I don’t even like using them for my RO system under my kitchen sink.
Me thinks it would be smart to use a more robust fitting on a plane.