Definition of spam is in the rules. Try to understand this, ask if you have problems with it.
Here's what it says, "Posting copypasta, stream advertisement, meme plugs, etc. on a user's image who doesn't approve of it, or unfunnily spamming it makes you an uncool user."
Two things,
1. A single comment on multiple posts can be considered spam (for example, this is how stream advertisement is done).
2. Multiple comments on a single post can be considered spam, common sense.
In both cases, we need the the user who's affected by the spam to flag it or report it to a mod.
The wording in the rule clearly implies that it's spam when it's inconveniencing someone.
You're removing comments that are not reported are not abusive, this is excessive mod action which has always been discouraged.
If you really want something to do, you can delete all deleted users' comments because they can't complain. This will help you climb the mods list and you'll also have many buttons to press.
Caption this Meme
