In chronological order:
The only one I see you putting the onus on someone else is the quote below, but even then it's not on the government but on random people and in the same post you still put onus on Denji.
It might not have been what you intended but if you look at the quotes it looks like you put 90-100% of the responsibility on Denji for being in a shitty situation from the start. Again I agree that it's hard to believe the situation he found himself in as a child with zero support, but I still think the onus was never on Denji regardless of what age he currently is in the anime because again it's been going on since he was a child and he's still the victim. I'm pretty sure he's suppose to still be a teen not an adult, an anime can't have an adult as the main protagonist (half sarcasm half serious).
Also have you never heard of the teen that sold his kidney to buy an iPhone/iPad? He was also quoted saying "Why do I need two kidneys? One is enough.". Finally selling organs is fairly standard threat from mobs in fiction when it comes to paying back debts.