I take this opportunity of wrapping up Buck's comment to remind that comments are not meant to stay forever and it is totally fine to flag other's comments, suggest to move entire comment section to chat, or delete your own comments the very moment they become useless. Some of them are just noise and have to be nuked. Some are “crutches” to support a post, and once the post “recovers” (i.e., gets edited) by taking the comments into consideration, the comments have to go away.
A sheer number of comments dominates the number of Q&As posts combined, so a review queue for handling comment flags might get busy at times. Especially if a marshal badge hunter joins a party:) There is nothing wrong with flagging numerous comments at once, but mods are also humans (most of us are) and may misjudge certain things. In order to react to these flags, mods have to dive in and understand what the post is about, what a commentator is trying to bring to the table, how it all makes sense in a context of both post and conversation, then possibly do some editing or site searching, and finally complete the review.
I would say handling comments flags is one of the trickiest and least rewarding review jobs, so please don't be disappointed if mods didn't reacted the expected way. Unless there is a pattern, usually there is need to worry about unfair flag handling. Anyway, you did the right thing by posting a question on Meta. Also, there is What are declined flags, and what should I do about them? worth reading, although IMO it's only tangentially relevant in this case.
Briefly, there is only one flag I don't quite agree with, and it is the second one:
Flagging one comment out of the discussion defeats the purpose of that discussion. If you think the discussion is irrelevant, then flag an entire chain of comments. Picking one comment out of a bunch is tricky and doesn't always make sense as it leaves dangling narration.
The flags you cast on the first post are now accepted. The third flag was also on point, and I deleted ron's comment myself as redundant because its content is now in the answer.
Thank you for participating in site cleaning, and we will try to minimize inconveniences due to perturbations in the mod team.