I'll match my "in the 'hood" for yours. We are within the city limits of Saint Paul (not by a little) and the housing here costs nowhere near what it does in the "demand" neighborhoods. Most of the crime is petty stuff but there still are dangers such that I would not want to be on the streets of this neighborhood at 11:30 or later unless I had to be.
I still have no use for people kvetching on-line about snow removal deadlines or whether someone has a lot of boxes visible through the windows of their three-season porch. Want to do something positive? Roll your snowblower (or send your kids) over to where the people with three jobs live and just clear their sidewalk for them for once. The landlord who can't be bothered to clean up his/her property? There's a much better place to complain and get action than social media sites. Hate that Neighbor Jones doesn't bring his recycling bin in for a couple of days after collection? Pick it up once in a while and put it by his house. It obviously does not bother him.
There's nothing wrong with neighborhood vigilance. There's nothing wrong with wanting a neighborhood to look good (or cleaner or more kept up). But b!tching about it on sites like Nextdoor really only makes a self-selected group of people with free time feel better and concentrate on petty details. The old folks and the persons working rotating shifts and the slumlords -- they're not reading that forum.