Obviously a touchy subject, that said......
A tool that works for the scaff on a job does not make it the right tool.
To answer a couple of previous questions:
A coupler should be tightened to 50N/mtr which is what I used to check them to with a torque wrench all through the 70's & 80's. A standard box spanner in those days was "designed" at 9" in length which was determined from the average force exerted by a scaffolder on the 9" lever arm delivered the desired torque. (a true 9" not the 4" you think is 9"!!)
The incorrect torque wrench will damage fittings as they were not designed with mechanical means in mind, not as easy as redesigning them think how many millions of fittings are out there!
In answer to "The industry should move with the times" it has moved, It has moved to system this too has been driven by H&S and the need to protect the scaff. It tends to be the scaff that will not move with the industry, changing your box to a ratchet was a move, as is changing your ratchet to a wrench but it needs to be a tool suited to the job.
I don't believe they are a bad thing I am however sure that the need for the right impact wrench has yet to be met by the supply industry.
The wrench would need to have a clutch limiter to prevent over tightening combined with a stop system if the wrench is delivering less than the required torque, it would also need to be light and practical with tether system and a captive socket.
When and only when ALL the criteria are met will this be a suitable tool.
Scaffolding is not and never has been an easy job but easy does not make it right.