Tebbe.
That looks like compost or some other very dry material rather than semi-solids?
Yes I guess so.
I've seen them spread sloppy biosolids 20% DS and handled it well, even spread etc. Just put the youtube link in for fun really!
I can't say I have ever used one but they look pretty high spec and expensive. Followed a big Bergmann outfit up the road once and that looked impressive too but I doubt any of this stuff comes cheap. I know they had to use some high spec kit on the continent because of environmental controls etc.