Earlier quoted context omitted.
"Defined the police" usually means "fund social welfare" with a side of "disarm the beat cops so they learn to deescalate". "Abolish the police" is the message of a much smaller group. And any count of crime surge should also include crimes committed by police under color of law.
How many organizations have been improved throughout history via removal of funding? Will better qualified police officers get hired with less funding?
The idea is that you remove half the police work load, hire half the officers, and use that savings to assign that removed work load to more appropriate people like social workers, unarmed traffic enforcement, etc.
Cost per officer doesn't have to change.