Nuance is desirable. Anything complicated worth discussing is going to require a lot of nuanced understanding. It should certainly always be one of our ideals.

The challenge is: nuance is a luxury.

The people actually being affected by a crisis are often precisely those people who don't have the luxury of nuance.

So, while we should always strive for nuance, we also need to balance it with other ideals e.g. empathy.