So you mean people with less merit = spammer?
Let's put it this way: spammers earn less Merit.
I have ever found a member posting with long characters and got merited, and that post was low quality (in my opinion) because he just repeat the same statement.
I don't know what "long characters" means, but a single merited post doesn't matter much. And there is quite some Merit abuse to rank-up to Jr. Member. Higher ranks are much harder to reach for low-quality posters.
But with the actual reason put on the report will let reported members to know what's wrong with their post and help them to be better members.
You could have opened a topic in
Meta when your first few posts got deleted. People are more than willing to help you figure out why that happened.