I don’t see how handcuffs are better? They have the potential to injure the agitated person as well as crew trying to restrain the perp. Duct tape is gentler as well as does the job it’s being enlisted to do.
If injuries are a concern, there are also medical-grade restraints that are less dangerous than metal handcuffs.
Zip ties while used for temporary restraint by LEOs has weaknesses but medical restraints seem reasonable.