It would dilute ur hive holdings as ppl converted into hbd if the price got super low. However there are several fail safes in place prior to this happening. Worst case dilutions happen and HBD and hive trade together. when the token trades back above a dollar, hive and hbd will trade differently again.

The amount of things to at need to go wrong at the same time for this is 3 fail safes and a market crash so huge that it would dwarf any in history and would cost the attackers so much more money than the hassle and the value of the attack that it wouldn’t be worth it.

Then after all that the blockchain would still just recover and carry on, with a little dilution of hive tokens at worst.

Also if it was an attack the witnesses could take evasive manoeuvres if they saw huge amounts of hbd being converted to hive during the 3.5 day conversion period