I have left-leaning pals who are good at heart. They do things based on whether or not step 1 (of a proposed solution to a problem) seems compassionate. They do not have a good practical grasp on how the real world works. And they either do not consider full chains of resulting consequences, or they consider in their minds how a thing will play out, but their mental model of how things work out is impractical and divergent from how things actually work out.
As a result, they push for policies that in the full chain of consequences are disasters.
An example of chain of thought from left-leaning pals. People become criminals because of growing up in bad environments. (I don't have a problem with this first step. But let's keep going.) Since what environment one grows up in is not under one's control, being a criminal is not the criminal's fault. In fact, the criminal is a victim of bad circumstances. And you don't punish victims. Therefore, criminals shouldn't be prosecuted. You should have government-run aid programs and government-provided community counselors instead. It's the wrong direction to have police being harsh on those victims. If a victim steals a bit from a store, maybe it's because that person has to eat and has to feed a family. What would you do if you were starving or your family were starving? You shouldn't put people in jail for doing things they are forced by circumstances to do. There shouldn't be punishment for stealing up to some point.
So, this chain of reasoning starts from a point of compassion. And ends up in disaster. Because they didn't consider or believe that, if you put in place a system that doesn't punish theft, as result #2, you will get rampant theft. And if you have rampant theft, as result #3, every shop and store will move out of an area. And if every store and shop moves out of an area, as result #4, you have no stores, which makes it a worse place to live. And result #5, if you have fewer jobs in the area, it makes it a worse place to live. And as result #6, if it's a worse place to live, people who can move out do move out, while people who have more problems stay. And as result #7, if you have that dynamic, you end up creating more people in the situation you are trying to help in step #1. You created a doom loop.
Add in corruption at the top (those who might know a thing will be a disaster, but promote it anyway for money or votes or power), and you have what leads to the Detroitification of your once-great city. I'm sensitive to this, as I grew up near Detroit and saw what happened to what was once America's thriving 5th largest city, full of prosperity, jobs, and well integrated.
You can Detroitify cities through this process.
You can Detroitify companies through this process.
You can Detroitify nations through this process.