I didn't say scraping is a bad idea either. It's helpful in many ways to be honest. But scraping addresses isn't a good idea as I said. It doesn't help a lot to the forum. I don't know if it's helpful to others or not as I don't see a lot of benefits there. It only helps forum polices lol. But in general, scraping isn't that bad.
People must not post stuff on the internet but there's bad days. Some may mistakenly post their address or anything private. But with scrapers, it makes easy to keep a record. We don't know whether someone else is scraping or not though I believe a lot of people are doing including FBI (who knows you are a part of them or not  ).