Oh no, this isn't about copy and paste spam efforts.
This is about people with a decent amount of SP putting spam comments on posts like enjoyed or even in the worst cases random numbers and then voting up their own comments with all their voting power to get rewards. There is nothing inherently wrong with voting for your own comment if you have a reason but some of the spammers don't even vote on the posts they are spamming on, they only vote on their own comments over and over and over again.
So yes, you might be over thinking it a tad :0)
Ah! Well that's something I wasn't aware of. That's pretty shitty. Thank you for bringing it to light for me as now I get it. I'm in the boat of not for it too. So what do we do? Flag the comments? I suppose I'll see this as I can't recall running into as of yet and I read lot's of comments.
It is a bit rubbish. You probably wouldn't see them as they do them on old posts or little known posts. You will run into it eventually and shake your head