It may well be the case that the people raising the concerns have a personal or motivational problem with the improvement but don't feel comfortable voicing it.
很可能那些提出个人担忧的人就有某种个人或动机问题需要改进，这是好事，但说出来以后并不一定会感到舒服一些。
My motivational system ensures that when I imagine the objectively better future it looks really great, far better than all the other options -- I'll be so happy!
我的动机系统确保当我想象客观上更好的未来时，会感觉这种选择很棒，比其他所有选择都要棒得多──我会非常快乐！