If you want to make that argument they already took out a huge chunk away from HF25 by removing RC delegations to a softfork afterwards. So testing is going to be much easier than planned.
But also they are simply removing interest from unstaked HBD with the hope that witnesses increase the interest rate on staked HBD.
I guess we could all pitch in to make the testing phase go a couple days faster than planned?
It is not so much the request, I feel it is the wrong time last minute to add it to the HF. I remember the last minute changes on one of the steem hard forks, and then the quick fix, and then the several days of in and out of service of steem.
HF25 has been being discussed for several months, for most of those several months it has been about the foundation and code fixes and witness retention/selection fix, not about any financial fixes other than the RC issues so second layer players can have an easier time of onboarding and helping those they onboard get going.
I always question the motives of "Oh we forgot this, or we just remembered this", I have been trying to follow the HF 25 issues, and I do not recall any talk during that time of interest fixes other than the minor one they did about a month ago, and I believe that was just a code change that did not require consensus.