Right or not, I think charitably, the person you are responding to is pointing out that this is not a new thing in social media sites. It's a decades old technique at this point.
https://www.managingcommunities.com/2009/09/14/troll-hack-gl...
When installed it extended the idea of banning or shadow banning as it degraded the user experience for the person in question. Basically giving the impression that the site was malfunctioning to the point that it was frustrating for the user and they left the site for a while. This included random delays to the page loading, and sending them to a different page and ignoring their intent.
I think most people who have the technical skill to do this effectively don't telegraph their intentions on what is, to all intents and purposes, social media.
But saying people don't broadcast their criminal intentions on social media... I'm sure that's more common than you think :P
[0] https://citizenlab.ca/2020/05/wechat-surveillance-explained/
To combat spam, mostly. People posting links to scam sites to watch sports games.