If arborists were required to string 5/8" safety ropes horizontally every 4 feet of vertical height above ground in a circle around the tree, with fall arrestors hooking the entire crew to them, while carrying at least one fire extinguisher and wearing a bee suit and a ventilator...
That's a nice satire, but no OSHA standards I'm familiar with are that ridiculous, and most of them make good sense.
If you're tripping over extension cords and pneumatic hoses on a roof, then maybe you've got too many tools and too many people on the roof. For most of my 30-year building career, I rarely had much more than a hammer on the roof with me, and never more than one or two other people at a time.
Where I do agree is that some OSHA rules are not necessary for the very small contractor (and I've never seen an OSHA inspector at any work site I've been on during those 30 years, as they mostly police the big boys) - as long as common sense and a priority on worker safety are in the driver's seat.
In fact, though I've regularly used non-OSHA improvised scaffolding, cranes and jacks, using old-timer tricks of the trade, I've never had a work-at-height accident, and hardly any accident of any kind on any of my job sites.