Part of ethics also has to do with the resources. With our current state of the art cloning frankly sucks. Cloning Steven Hawkings just gets you a baby who will certainly get very sick. Even cloning livestock becomes unethical because of the sheer pointless indulgence. You are basically better off with sexual reproduction unless you want to attempt resurrection of dead species incubated by their nearest kin which adds further complications to get one let alone sustainable numbers.
A vaccine with a 10% chance to kill someone but protect from a widespread disease killing 99.99999% of the infected and exposes it to 20 other people under even strictest quarantine measures it becomes ethical to dose everyone against their will at the risk of literal decimation because the alternative is so much worse. A vaccine against the common cold with a 1% chance of death becomes a no for everyone and a maybe for immunocompromised if the chance of a lethal cold is higher and if it works for them in the first place.
A vaccine with a 10% chance to kill someone but protect from a widespread disease killing 99.99999% of the infected and exposes it to 20 other people under even strictest quarantine measures it becomes ethical to dose everyone against their will at the risk of literal decimation because the alternative is so much worse. A vaccine against the common cold with a 1% chance of death becomes a no for everyone and a maybe for immunocompromised if the chance of a lethal cold is higher and if it works for them in the first place.