In the Altcoin section you have a situation like, an announcement and then reply to a user in a separate post in the same day, should I report it or it's just fine to be like this? Since the bumping score is calculated differently is the reply considered a "bump" there (if you don't have bumping power for example) and it doesn't bump the thread?
My understanding of the rules is that, assuming the posts are not being made at the time the thread was created, you cannot make a new reply if you were the last person to reply to a thread. If you are the last person to post in a thread, you need to either edit your previous post, or remove your previous post immediately after you create your new post.
If you are writing an "update", this is the same as a "bump" and the same rules apply.
Replays to genuine posts are fine. I keep seeing old style bumping services.
I suggest, if you see such project, inform the OP account first, because I've seen people fooled by those "advertising companies" to keep the project alive by breaking the rules and the owner has no idea about it.
These "bumping services" will be of little value to threads in most altcoin subs because merit is required in order to bump threads, which is not trivial to get.
I would not see it as a big deal if you post in a thread in the altcoin sub that results in its bump score increasing. If you are being critical of the project, anyone viewing the thread will see your criticism.