Well, the reason why we have this is because it's easy to use - anyone can report spam posts or spammers here. Most of us mods are reactive; I try to be fairly proactive by watching the Latest Activity but we don't always catch everything.
The moderator staff does have a process where we have a specific mods-only forum for specific issues, and we can create "tickets" in the form of threads for the senior mods or admins to deal with, but that's asking a lot of the average user...so we have this thread. You've been around a long time, you know just as well as I do how bad people tend to be at following instructions
Imagine what it would look like if everyone who found spam were posting threads in that kind of forum