You could chop the trees down, but that would leave you with no forest. It's not just mature trees that drop fuel, even growing trees do this.
If you have a forest in Australia[0], it has to burn regularly. It's not like Europe or America, where you can cheerfully build your house in the woods and it's all very pretty. If you build your house in the bush, then you have to cope with the fires.
Good to see the Guardian article talking about adaptation for once. One possible answer is to create houses that won't burn, and that are sealed from the heat and smoke.
[0] I gather that Tasmanian forest are less reliant on fire, so the situation may be different there.
It's not like there haven't been any "small" fires in the preceding years?
Every acre of bush needs to burn every few years. If it doesn't, fuel load builds up and then there's a huge fire.
People forget that Australian bush forest needs to burn. That either happens with small fires frequently, or big fires infrequently. Those are the choices. Not burning at all is effectively choosing a massive fire very infrequently.