How is tsunami frequency established to be influenced by anthropomorphic climate change? Also, over a hundred years ago wildfires and floods were more frequent

How is tsunami frequency established to be influenced by anthropomorphic climate change? Also, over a hundred years ago wildfires and floods were more frequent than they are now and the historical deaths per capita from natural disasters was much higher. What we are seeing recently in Maui, California, PNW, and elsewhere are primarily the consequences of an artificial blip of decades of over-protection of adjacent forests and waterways because of misguided environmental activism. When you refuse to allow forest culling or occasional fires and hinder development of dams and levees, later fires and natural movement of rivers becomes uncontrollable. While more land was developed and the population exploded, the resource management expansion was missing. Climate change may have an effect on these recent incidents, but thinking of it as the main cause is misleading.