A quick google search tells me that arson was the cause of 10-15% of wildfires, not 90%. Do you have an actual reputable news source for your “statistic” or is this just a bit of misinformation you are using to cast doubts on our climate emergency?

Here is one of many news articles on the actual numbers, btw: https://www.nbcnews.com/news/amp/rcna171393