I think he is simply bought off.
He did nothing about the law until 17 days before the deadline to file a veto referendum. This after two months of inactivity. But some money got injected into the equation.
The veto referendum cost about $100,000. Moms Demand Action was intimately involved. They are heavily funded by Michael Bloomberg.
Bought off
1) The biggest problem with political corruption is that politicians are actually worth buying. This indicates that they have too much power.
2) If he’s bought off, there’s a reason the buyers went to him.