It's fair to wonder what would be the results if the question were rather: "Do you favor defunding the police?".
It's not surprising most folks answered the actual question affirmatively. That's the point...people generally favor enhanced public services to deal with mental health and other crises instead of having the police deal with nearly every perceived emergency. So yeah, I'd hope politicians and leaders of good will and skill could leverage this into positive change.
This is essentially what the practice and goal of abolition is. What are all the social problems that police and prisons fail to solve...sex work, drug addiction, domestic abuse, homelessness, etc., and what are ways that we can address those social issues without the carceral state. It’s much cheaper to house people than it is to sweep them out of homeless camps and cycle them through jails and ERs. Police fail at solving gang violence. What are the social conditions that lead kids to that life and cycle of violence? How do we disrupt that? Education, job guarantees, decriminalization of drugs, etc.
How much do drug rehab programs cost? If you don’t have stable housing, is it realistic for someone to treat their addiction? And on and on...