It's certainly not a regular part of life in the United States. It may be (but probably isn't) a regular part of your own life in the United States.
I've made eye contact with a pooping homeless person in the United States zero times over four decades of life.
I think you mean "This has become a regular part of life in the city I live in." That is so outside of regular life in the vast majority of the USA that I can't comprehend seeing it once.
In what city is that an actual regular part of life?
The US has a shitty scooter problem. Solution? More scooters, but these has cameras, and they are self driving. They help clear the sidewalks of the other shitty solution.
The US is a chain of shitty decisions that never address real problems, but cause the next generation of problems to keep the economy running.
Thank god we have a log(n) solution to the epidemic of scooters on streets. Thank you technology. I hope all the Series A investors were able to get that new electric Porsche and didn't have to settle for a Corvette like some filthy commoner.