In his defense, he might have been lurking before registering here--or else it's an alt account being used for whatever reason.  I was aware of how bad the shitposting situation was before I actually created an account here, but I definitely didn't just jump right into addressing it when I had activity=9.  It was quite some time before that happened, if I recall correctly.

OP, everyone is aware of what the problem is and the extent of its effects.  Theymos doesn't want to do away with signature campaigns; he's made that quite clear.  Basically we just have to suck it up and deal with it, and that's why he introduced the merit system. 

The next improvement that needs to happen (that probably won't) is that altcoin signature campaigns need to stop accepting Jr. Members with shitty posting histories.  Those folks aren't worried about earning merit, because they can employ multiple low-ranked accounts and still earn enough money from the campaigns to feed their indolent families for years.  The bitcoin-paying sig campaigns are better-managed by far, have better rules, and in general don't condone spamming.  Altcoin bounties are another story entirely.