the pressurized tank will exert that force forwards on the pipe, while the air coming out the back of the tank will exert that same force rearwards on the tank.

so according to you , there would be no force exerted onto the sides of the pipe?

and dont forget those same exact forces are exerted to the front of the pipe as well , you cant just have it your way.

but the forces from the air as it leaves the tank pressing against the pipe is not what will cause the pipe to move.

it is the mass of air that is moving inside the pipe from one place in front to the rest of the inside of the pipe.

the tube only slows down the time that the mass moves.
3/4 inch of dust build up on the moon in 4.527 billion years,LOL and QM is fantasy science.