Would faulty steering pump wreck rack ?

Hi, just quick question.

Steering pump noisy when steering wheel on full lock, also uneven operation when steering, like when goin in to crossroads (right or left... all samo), can feel pump kind pulsing on steering wheel, while turning wheel, can feel, it is easer and harder every second..... i know ... typical signs of failing power steering pump, and change is on cards.

Had problem with steering rack... worn pinon... plus something else.... , (previous owner must be using this car as a skip in building ), recently put on my avensis reconditioned steering rack, week or so, was everything perfect, done tracking also. now it leaks from both ends , went to garage, who sells them (6 months warranty, fitting myself) , gave me another rack, but started arguing with me, that there must be faulty steering pump, as they may make incredible pressure, and burst the seals.... (old rack didnt leak).

would it be true ??

I am long time working with cars, but never heard that. even opposite, faulty steering pump would cause low pressure, and it wouldnt do the job right, or there is something what i dont know ?