I cancelled my order for the fold 3 because Samsung North America has decided to not allow dual sim. It is a greed decision so if you are not happy with Samsung's decision, don't buy another Samsung phone. I have been with them since S2 and just purchased the iPhone 12 Max and yes it does support dual sim. No more carrying two phones for me.
I got the Samsung s21 Ultra back in March based on it's esim capability. I travel a lot so have the option of a dual sim phone is important to me when I travel so I don't need to carry two phones. By the time I figured out the esim had been disable by Rogers it was too late to return the phone and I had already sold my old dual sim phone.
I think Rogers owes us an explanation to why the esim has been disable.