I can only speak for myself, not anyone else voicing opposition to changes. From the perspective that you have determined to make changes, obviously to be successful you have to target the propositions which have a likelihood for support. So yes, I agree with you that this is reasonable, but that doesn't mean it's fair. Tyranny by the majority is still tyranny. For me, the issue is that people want to change the rules because they don't like the benefit that one person (or a small number of people) are deriving from the rules as they stand, and that arbitrary determination undermines the legitimacy of the system. It may be politically popular to take away someone else's rights, but that's not fair.