My primary consideration regarding utility of vesting is security, although that may be dismissed as due to my personal experience, and lack of interest in economic factors. I do not see more than a marginal benefit to security arising from extending the powerdown period. Certainly, I do not see that investing the resources requisite to effecting such changes as reasonable considering the extant market.
I reckon devs have more pressing concerns, as should we all. I agree with others that this post is a necessary reaction to misapprehending investment of nescient parties, and maintaining focus on existing development priorities should continue.
Thanks!