Unfortunately, this has a lot of drawbacks. Amending the constitution requires a 60% supermajority, which I think is appropriate for constitutional questions, but is too high of a threshold for ordinary policy legislation. In this case, repealing the laws against abortion and marijuana have majority public support by a wide margin, so why should we have to pass new constitutional amendments with a 60% supermajority just to repeal bad statutes that were passed via the ordinary legislative process in the first place?
On top of that, because measures passed this way become constitutional provisions, rather than normal legislation, it makes it difficult for the courts to exercise judicial review and reconcile these measures with extant law. It's sort of the worst of both worlds.
Maybe we should try to get an actual ballot initiative process into a draft constitutional amendment for the next election cycle.
The plebiscite/referendum is the ultimate authority.
The point of having a political process is to define a structured way of resolving the conflicts that arise from those divergences of interests and values, not to pretend that the output of specific elections somehow represents the singular will of the entirety of society. Presuming that is a grave error that inevitably results in the strongest faction imposing its will unilaterally onto all others.
Democracy is a great way of deciding political questions, but without safeguards in place to ensure that that it's kept within defined bounds of what qualifies as a political question in the first place, it will degrade into authoritarianism pretty rapidly.
We absolutely need judicial review, and plebiscites in which narrow majorities approve of policies that are unconstitutional, or otherwise violate people's fundamental rights, should unquestionably be struck down, just as equivalent policies enacted by a legislative body would.
you've got to stay hopeful. votes do count, but a 60% threshold means a minority have more sway in this instance.