I see no point trying this. Even if the petition had an effect, as long as people let themselves be influenced in their investment decisions, there will always be someone who exploits it.
The investment problem is a matter of one's belief and trust in a particular industry, because every investment must always end in profit, that is a common thing that investors want, otherwise anyone would not want to invest in anything.
Agreed. But whether there is an exploitability problem depends on how belief and trust is established.
If it's established just by reading someone's Twitter feed, then it's easy to see that that person will always be able to "react" earlier than anyone else. The person can buy or sell before posting while anyone else can only do so after reading the post. Thus, the person that posts can always get the biggest part of the earnings (if there are any). If the profit margins are small, the person might even be the only one having positive profit from it.
People who act like this in spite of the obvious should not whine afterwards.