I agree with the addendum, “… Given the current outlook on the world / our society / what that sentient being would be forced to endure.”

I believe there is a possible, though highly improbable future (or, more likely alien world) that exists where it is moral to create sentience because there is significantly less suffering. Where sentient beings care for the well-being of each other.

Sometimes, it’s not about changing their mind, but influencing the many others who are less certain in their beliefs who are just reading along.