In the shorter term, I think it's true enough. Germany and Japan (both wealthy, highly developed nations) have both increased consumption of coal in order to move away from nuclear. I won't argue that's what they will do in the longer term though.
That's not true for Germany, see my comment above. Germany has nearly completely replaced nuclear with renewables, and is now (slowly) phasing out coal. Coal has been mostly constant with a slight downward trend in the past 15 years.
In the shorter term, I think it's true enough. Germany and Japan (both wealthy, highly developed nations) have both increased consumption of coal in order to move away from nuclear. I won't argue that's what they will do in the longer term though.