This is probably true. I've replaced the OTRE, ITRE, LBJ, bushings & rack guide over the last several years. All OEM parts other than the poly bushings. I had about a shot glass worth of what looked like thinned out dark grease in my ITRE boots when I replaced those parts in 2015. No noticeable drop in power steering fluid levels.
My steering column or rack has some lateral play which I can feel in the steering wheel (I can push my steering wheel about 1/8" to the left & right) & has a popping sound when turning the wheel in parking lots. I confirmed the lateral play wasn't from the slip joint on the steering shaft when I removed the steering assembly earlier this year. I don't remember exactly when these symptoms started but has been going on for at least 4-5 years. Since I've replaced just about everything that's replaceable, a new steering rack is probably in my future.