The right-wing weaponized it and most news outlets did nothing to push back against them.
There were various reports of "huge crime spikes" in certain cities following announcements by local politicians that the local PD were going to be defunded, but in most cases that never even happened, and in some cases the spending on police even went up by a couple of percent.
https://abcnews.go.com/US/defunding-claims-police-funding-increased-us-cities/story?id=91511971
Yeah, it's sad how such a promising idea essentially got killed because the poor choice of name stuck.
"Reform Police Funding" or "Budget Reallocation" would have been a lot less controversial.