It definitely increases the risk from what I can tell. If you can't walk the thing two steps, you probably have no business riding that thing down to depth (not like they squat to depth anyways). You're either not strong enough or are using way too much supportive gear (multiply squat suits, knee wraps, etc.)
As a fan of powerlifting, I've seen countless more mishaps out of a monolift than a combo rack. Anecdotally.
That bench was awfully short. But it's not *much* shorter than you see at the highest levels within IPF. The last time I watched the IPF worlds (its still on YouTube), I didn't see a single bencher whose elbows ever dropped below the pad.
Also to note, even in the highest weight classes, the women in IPF have the prettiest legs for sure.
I have neve watched equipped powerlift and know absolutely zero. However, there are competitive lifters who walk out 20% more than their 1RM as part of their training. (Whether that's a good idea or not is a different discussion). You get about 10% more out of a monolift, so any reasonable load that one is lifting from a monolift is a load that one could certainly walk out and put back (but not necessarily walk out, squat, and put back).
I have never even seen a real-life monolift and have only ever lifted from a squat rack or power rack. Hence why I find the topic interesting.
Quick update to my last post about the IPF and bench press range of motion. Just saw that the new IPF rule for benching is that lifters can not put their feet on the bench to set up and the main one, "the underside of both elbows joints is lowered level with or below the top surface of each respective shoulder joint."
Let's see how that goes.
Such fools. They have created another judging problem. The answer is very simple: How to Fix Powerlifting? | Mark Rippetoe
Clearly the monolift eliminates a very difficult and fatiguing part of the lift, amplified by use of knee wraps and squat suits. That's where the increase is from. Having to walk the weight out ensures the lifter can actually control the thing and limits the lifter from handling loads that they probably shouldn't be calling for.