There is no explicit coordination happening to create pump and dumps. There has, on occasion, been some level of coordination when attempting to trigger a short squeeze but that is mechanically different than a pump and dump.
What it does do, though, is spur memetic investment, which can create a short term frenzy for some stocks but it is not a planned event. Thousands of people post stocks each day and every so often a stock will perform well enough to where the community will take hold of it and push it to pretty incredible heights. The most recent one would be TRKA. If you're switched on enough, you can make some pretty massive gains.
However don't take this as me defending their crypto scam. That's just downright not okay.
