Sure, or the "violation" is by the city who would have to spend money to fix the intersection, thus they're incentivized to ignore it.
I think the general problem is that the presence of the stop sign and the 80-99% case (depending on the area/intersection) being to only worry about cars creates a type of blindness to pedestrians when they are there. Rather than these devices, I would say it would be more effective to install flashing lights on or around the stop sign, that turn on to signal a pedestrian is crossing.
(of course that would now be a bit of an uphill battle owing to the signs with the lights that flash all the time)
I recognized that in my last parenthetical sentence, as we've now got stop signs that flash all the time for similar "must do something" reasons. My point was specifically to only draw attention when it's warranted, to avoid that kind of fatigue. Like I think the crosswalks with flashing yellow lights when pedestrians are crossing are ridiculous overkill, but they don't add to my oversignage fatigue because they only demand that attention when the attention is needed.
I think the general problem is that the presence of the stop sign and the 80-99% case (depending on the area/intersection) being to only worry about cars creates a type of blindness to pedestrians when they are there. Rather than these devices, I would say it would be more effective to install flashing lights on or around the stop sign, that turn on to signal a pedestrian is crossing.
(of course that would now be a bit of an uphill battle owing to the signs with the lights that flash all the time)