Again, I’m not an expert on Washington forests. However you and the link did not refute anything I said. You might be right, but right now you are just someone on the internet who has given no indication of knowing anything about the topic. You bold section doesn’t say low severity fires didn’t happen - since it only talked about high severity fires. At best it is implied that there were none, but there was enough other discussion to question if that was intended.

All your link said about low severity fires is some proposed them for western Washington, but the state requires all fires to be suppressed quickly and so it isn’t an option worth pursuing. It is implied that tribes were burning the western forests prior to the arrival of white man - but the short page on this topic gives too little detail to state with any confidence that was the historical norm around low intensity fires.

I have always maintained that forests need to be maintained by foresters who are experts in the forest in question. We should not be preventing them from using the proper tools to manage their forests. I am waiting to see input from someone who is such an expert.