The seeds have fuck all to do with it. They drop their seeds AFTER a fire sweeps through, the seeds don't cause fires. They're oily trees, their leaves are highly combustible, and they're trash trees that drop a lot of bark and branches, so the ground around them is littered with dried tinder - and weeds and undergrowth, because they allow more light through them, unlike oak, or firs, which are indigenous to the region.

The Berkeley/Oakland fires are the best example of how dangerous eucalyptus are, they literally explode when on fire, and the trash they drop spreads it further. The crowns of the trees explode, and it has nothing to do with the seeds.

When my parents lived in CA, I spent many hours ripping them out of our property, it took about one season of cleaning up after them for my dad to get rid of them, and replant other trees. I fucking hate eucalyptus trees, they're trash trees. My hands would smell like eucalyptus for days after clearing them, you get covered in sticky oil - and you can't burn the wood, because it's so oily. We just stacked it in a corner of the lot and would take a truckload to the dump once in a while.