Hoist is way easier to assure safety than heslo hec.
In case of OEI or a strong downdrought, a briefed flyaway height is the helicopter crew safety whilst the hoist operator has the call of either cut or flyaway&raise hoist, deciding for the safest option for the crew on the line. Nothing left to chance.
When possible due to lower weight or steady headwind, a “safe oei” callout is a blessing, no need to do a flyaway, just make it safe for everybody and go when possible.