Nobody focuses on "black carbon," because we can't prevent wildfires, as they are a natural occurrence even without climate change. They are happening more frequently due to climate change, and firefighters try to control the burn in various ways, but it's a lot easier to work on the human-sourced CO2 and Methane than it is to address wildfires. The frequency and effect is a symptom of our own output.
If we can get a hold on our own emissions, wildfires will become less frequent as well.