We have dogs and we work with dogs too. Neither of us have any problems cleaning up after our hounds, even when there is nobody looking. Its down to good manners and personal standards really. I really don't want others complaining about the mess my dogs leave.
There are always exceptions to scooping the poop. My youngster loves to dive deep into the brambles for some toilet privacy. I am not going deep into the brambles to clean up poo! Its simply not going to happen. Then again, it will biodegrade in a matter of days and its not in the middle of the path. We use biodegradable poop bags, bag it and bin it. Its not difficult! We are not paragons of virtue, just well brought up.
This practice of hanging bags up on the bushes really irritates me. On the field, where we walk regularly in the mornings, there is a bag of poo hanging up. Its well out of reach as its been thrown up so high. Its been there over a year now. Carrier bags are not that good at rotting. Of course we are assuming that its a bag of poo, we've not climbed up to check. Everywhere you go there are these little plastic bags either dumped into the base of a bush or actually hanging up on it. Its the way society is going. I have to pick up a bag of poo thats been thrown over my front wall pretty much daily. Sometimes twice. Same for my neighbours. The poo bag is alongside the general rubbish that the kids on the way to school just hoss over the wall. Despite the fact there is a bin on the corner of the street - just 30 yards along. Even then there is rubbish around the bin and not actually in it.
Its not just the dog poo thats the problem, its all the other rubbish to boot. I do agree that the poo is far more unpleasant to step in than an McDonalds wrapper. The poo is just the thin end of the wedge though.