But it is spam.
How do you consider it not to be spam? It’s the definiton of spam.
unsolicited usually commercial messages (such as e-mails, text messages, or Internet postings) sent to a large number of recipients or posted in a large number of places
It’s spam.
to send unwanted e-mail to (someone)
https://www.merriam-webster.com/dictionary/spam
So should they ignore it if they don’t like it? Or should they actually have a discussion (like a discussion forum)?
The same small group of players are making topics daily. Not just 1. Like, 3 a day.
Go and look at profiles of the people posting these mercy posts.