This is the view out the northern window in my bathroom. My neighbor has been cleaning their yard for years, which has just involved them piling garbage in a trailer. The trailer has never been emptied, and At this point I doubt they could move it without the majority of the trash falling out.
Luckily the fence on that side of the yard is 6 feet, so I do not really see the trash under normal circumstances.
Not allowing investment properties is different than not allowing eyesores. I don’t think you want to keep prices down by letting the place go to shit.