Benjamin Huie, 57, also joined the protest after evacuating his family home in Great Mackerel Beach, which borders Ku- Ring-Gai Chase National Park in Sydney's northern fringe.
Mr Huie said there has never been a better time to talk about climate change.
"We do understand that these bushfires aren't caused by climate change, but they are encouraged by climate change, the changing climate creates better conditions for these things to exist and when you have a day like today, on top of everything – it is out of hand," he said.
A traditionally conservative voter, Mr Huie said those gathered at the protest were closer to his political outlook than his party.
"A conservative would want to be sure, would want to be safe, and would want to take action before it happens so you're not just lying back and going, 'oh, here it all comes'," he said.
NSW Premier Gladys Berejiklian has hit back at questions linking fires raging around the state to climate change, insisting now was not the time to discuss the issue – a sentiment Mr Crowe dismissed.
"When's the time to talk about climate change then, if I'm standing in the wreckage of my own house," he said while speaking to reporters.
"We had ample time to prepare and they're talking about hopes and dreams, thoughts and prayers, miracles and heroes – it's not realistic."
