Echoing what others have said, the personal disgust I have for some suburban neighborhoods are the very new ones, that began appearing in the 90’s.
Older suburbs are quite nice: leafy, cobblestones, winding roads, no HOA’s, interesting architecture, even some small walking areas/shopping areas like you’ve described in your 'burb, quality restaurants that rival city ones. Pittsburgh has a few of these. Affluent suburbs are really quite nice. They still close up shop earlier than the city and don’t have the same restaurant options but they are still nice places to live. Also what falls under these “older suburbs” category are suburbs in very socially progressive cities, like San Francisco.
Small cities and college towns are also not “the suburbs” - sometimes they’re all lumped in together when the former two are often quite nice, with dedicated main streets and walkability.
But it’s the 100k starter homes (Ryan homes, basically) churned out by the thousands in horrible, unplanned unincorporated areas that make me nuts. The 3-4 lane traffic is horrible all the time. The people universally do this: go to local college or trade school, graduate by 23, get married by 26, have 2 children before 30, get fat. The women often don’t work. Nobody travels except to see relatives. Everyone eats fake Mexican food or fake Chinese food for dinner out. They go to megachurches on Sunday.
I was volunteering at a Petco (for an unrelated charity) when 30 heads swiveled to the front - where a young black woman and a white guy were holding hands. That would never happen in the city itself.
In short, there is no intellectual curiosity, there is no drive to succeed nor authenticity of food or culture. The only interests are in maintaining the status quo in a “new” house and living paycheck to paycheck in a bland suburb away from the city (and scary brown people).
And all of that is universally reviled by the 'dope.