The issue is that it is vague and has several implicit meanings and includes groups that want to divert funding to more community services to aid police, such a

The issue is that it is vague and has several implicit meanings and includes groups that want to divert funding to more community services to aid police, such as mental health crisis units, so police don't have to do things they don't have training for then you have others that genuinely want to defund police completely, arguing that the institution itself is a vestige of civil war times to protect wealthy white property/slave owners I believe this is intentional, as it gives extremist a softer platform. Same can be said about the BLM organization that has an explicit communistic agenda, while the movement is a broad group fighting against police violence and general civil liberties