Realistically, over time, the body will break down under the pressure of such heavy weight, solid form or not. There may be fewer injuries in powerlifting initially due to a renewed focus of strengthening the shit out of the posterior chain, but the dangers remain. I know several powerlifters who have both hips and shoulders replaced. The use of steroids, which I am neither for or against, can only further exacerbate the problems because of how strong certain compounds work. Take Chuck Vogelphol for example, one of my favorite powerlifters and regarded as one of the greats. Squatting 1000lbs+ regularly will ultimately guarantee fucked up hips, groins, and more.
BUT…I will say this. When I was powerlifting, it was DAMN fun!