Answering your question, yes. If I look at someone's profile and look at the comments that they left on past posts and it is exactly the same comment over and over again, I call that spam - only because it is not specific to the post. If I leave a comment on a post, even if the same thoughts of praise apply to their post, I find a way to make my comment fit their post to let them know I actually read it.
Do I flag them? Honestly, I have not flagged one post or comment yet (even though there have been plenty of deserving ones). But, I know that there are members of the community that will not hesitate to flag a post/comment that is spam.
I just want to see comments that show that the commenter read the post and isn't just trying to get a quick upvote.
Thank you for your question, and for taking the time to leave a Genuine Comment on my post! :)