Ummm an interesting statement.
Total and utter twaddle (i was going to say bollocks but thought i might get banned)
I wonder how they came to this conclusion, think about it.
A scaffolding has no moving parts - a mewp has hundreds.
Scaffolding provides a much larger working m2 area than a mewp.
Imagine a fully scaffolded 20 story building - on average there are 50 men on the scaffold at any one time.
There are 4 mewps on the job doing work up to say 16m high with two men in each cage, 8 men.
Providing the mewp does not fall over or the cage levelling system doesnt give up and dump them out of course the 50 men on the scaffolding are going to be involved in more accidents than the 8 men in the mewps.
Jeez - crap like this is like listening to political spin doctors.
steam boss