Because they(Steemit) believe this change to 4-week power down by itself is simple enough to be implemented in the next SMTs hardfork. Anything more will require its own discussion, development, and hardfork.
Original proposal received a lot of support, but now many expressing opposing views. That’s why I think they want to know if this is really what majority stakeholders/community want.
This is my understanding.
RE: HF Proposal: Vote AGAINST Reducing Power Down Period to 4 Weeks