Millennium-alan didn't think burning fossil fuels is a problem because he thought the oil and coal would run out before we had a run away greenhouse effect. He thought we had been burning fossil fuels for 200 years, yet the average global temperatures haven't increased much. Servant-Alan, today's me thinks it is a problem and the Earth could go through a tipping point and there could be a bigger disaster happening, perhaps the whole planet could turn into a dessert.
Just this year we had hurricane Ian in America, one of many Katrina sized Hurricanes that comes every year now. Even now it has been a mild autumn in Britain. We had a three month drought in the summer and record high temperatures, it went to 40⁰c for the first time.