i can honestly say ~ it has never occurred to me to trash a company at all.
Nor would I ever consider hyping a company to get others to invest so my investment would go up or even worse, so I could get out. When I truly believe in a company, I tell my friends, relatives and people I know and who trust me. This way, if I'm right, I get the credit and if I'm wrong I get the blame.
Trashing anonymous pumpers, well, that's a different story.