However, there are still loopholes for such members. For example, I often come across accounts that have either very little or no merit at all earned over the life of this system. But they continue to take part in signature campaigns because they have reached a certain level before the new rules were introduced. They live normally even as a full member, not to mention those who have been seniors and heros before merits were born.
The altcoin campaigns have always been lower quality. You'll rarely see users participating in Bitcoin signature campaigns without actually being a decent poster. The altcoins section is a different story, mainly because they're paying you next to nothing, because they pay you with their worthless tokens, which can't be sold regardless. So, naturally only lower quality posters are interested in joining.
However, if their posting quality is that bad you can report them, and they'll likely get handled.