nothing that has multiple parts is ever all or nothing.

When the first mention of the HF arose.. it was stated as just to implement the SPS. At that point the SPS was to be funded by donations. At some point the decision was made to fund it from the reward pool, how much and what part of it.

Then Steemit Inc published a post talking about the EIP which was to be considered for some future HF. At some point a decision was made to add that to the HF under consideration.

I would hope that the top 20 had some serious conversations about each part of the two elements and the possible ramifications for the platform now and in the future.

So not sure how you can see that as an all or nothing package. Eventually a decision to fully implement or not has to be made ... that doesn't mean the witnesses are not free to express their concerns on elements of the current package even if they voted for in total.