Yeah, that's not ideal behavior. I'm a psychologist for a detox facility. People can be there from 14 to 60 days depending on the program. I've talked to hundreds of druggies, alcoholics, just addicts and people with psychological problems. And they think differently and can rant and rave and talk like this.
I legit see comments like this on Reddit and 4chan all the time and sometimes it's obvious they're a troll and sometimes the amount of effort they put into something points towards issues or some kind of disorder. And I always want to PM them and be like, "Dude, you need to talk to a professional."
But I don't because
1. I doubt they would considering the stuff they're posting. I feel my messages would be met with hostility 99% of the time.
2. It's honestly not my business off the clock. It sucks but you can't help everyone.