No, the reason for not heating formula in a microwave is because research shows that it can lead to increased risk of severe ear infections in toddlers and infants. (instructables.com)
My oldest (she's now 20) had severe ear infections as a child. (yumyucky.com)
Her foster mom had spent 9 months helping her regain her health after severe ear infections and testing for allergies that ended up requiring regular allergy shots. (brooklinelabrescue.org)