https://www.courts.ca.gov/opinions/documents/A163655.PDF ^ Actual court ruling which is linked in the article itself. I find the article's headline misleading. The court ruled that a proposition that was passed by voters in California which classified these drivers as contractors was mostly constitutional and would be allowed to have the effect of law, noting that California's legislative branch was free to change th…
Lawmakers cannot change if they so choose. Propositions amend the constitution of California. They can modify it, but they have to honor the rule itself and cannot simply remove it or abrogate it through this alteration. > Legislature can amend Proposition 22’s provisions with a statute passed by a seven-eighths majority in both houses, so long as the statute is “consistent with, and furthers the purpose of,” the ini…
Initiate Constitutional Amendments do, Initiative Statutes do not. Prop 22 was an initiative statute, and as such did not amend the Constitution.
Nevertheless, because the legislative power resides in the people first and is delegated by them to the legislature to the extent that they have not themselves exercised it, an initiative statute, while subordinate to the State Constitution, cannot usually be altered by the legislature (the legislature can propose changes, but they must be passed by the people.) But, OTOH, Prop 22, as you note, contains a provision allowing a legislative hypermajority to amend it, and so can, in fact, be altered by the legislature unilaterally.
On the gripping hand, though, those unilateral alterations that the legislature can make are explicitly limited, and do not include making app-based drivers regular employees rather than contractors.