First off, this doesn't apply to 'ordinary comments'.
Should I flag a question that has too many thanks! this worked for me
comments? i.e. If there are about 30 comments in total but I have to sift through half of them to find actual comments on the answer.
not constructive / off-topic
ortoo chatty
orobsolete
orother
and write 'noise'?'thanks!'
?thanks
comments after it, for some of them the thanks is worth more than the upvote because it shows how much my answer helped them, which makes me happy. Flag everyone else's excessive thanks comments, don't take mine :)