I don't know if BP is suffering because of this drop. But the early investors are really frustrated since the drop is very extreme. I spent some money, bought some BP tokens when the price was around $30. Now, I almost lost more than 90%, and I am trying to forget those tokens on my wallets. I doubt if investors are those people who always tried to lower the price. How can they try to lower the price every time? 
The project may still develop slowly. But investors seem to leave gradually. I don't want to talk about "confidence" this time, you must know if no one feels confident seeing the drastic changes in BP price.
The manipulation game is as old as the market itself. We have seen many times how the whales have lowered the value of many coins/tokens to sow chaos and make users sell, to buy cheaper. And that is what is happening with $BP, but they are not institutional investors, of course, institutional investors continue to hold their tokens.
I don't think that investors are losing confidence, but it is normal that there are people who sell their tokens. This is a long term project, not a pump and dump like Doge.
I don't know if you have seen the value of $BP today, but as you can see, many people have been waiting for the token to hit $0.05 to buy.
When you can, please read the latest update from the team, you will get more answers. The latest update is here:
https://www.altcoinstalks.com/index.php?topic=258379.0