Thoughts on Back Squatting

I found the following link on back squatting from Mike Boyle. I first started thinking about getting away from the back squat after tweaking my back a few times, watching athletes lose training time from injuries and hearing Mike talk about it. I'm not sure I am at the point where I would totally eliminate back squatting, but I haven't coached even 1% of what Mike has either. It definitely raises the question if you can get your legs stronger without loading the spine, is there a good reason to do it? What are your thoughts on this? www.functionalstrengthcoach3.com/squats.html