You have put a very strong argument on how the community feature that will come with hivemind will make the use of bidbots to decrease in patronage. You are right in most of it but then this is human beings involve and as long as bidbots service are there, people will always find a reason to patronize them. These days I have even heard arguments that some claim to use bidbots not to get noticed but to increase their reputation. When I first came to Steemit, I thought reputation was the only thing that cannot be bought but must be earned. So, you see? People will always find a reason to patronize this services.