I would agree that since there's no agreement of morals or ethics, it's easy to justify or vilify any action. So discussing the morality of employment is fruitless.
Equally Labour entropy suggests that jobs will flow from high-cost locations to low cost locations. Remote work reduces the friction of this flow. If you can work from home in SV you can do the same job from home in ohio, or Latvia or India.
External forces are at work to increase or decrease the friction of this entropy, but for the most part it seems to be flowing in one direction.
Whether this is moral or nor seems to be in the eye of the beholder.