This bit is valid - "higher temps and drying out of the climate lead to a gradually worsening effect from wildfires over time. So even if it's caused by arson the conditions that allow the fire to spread so fast or burn so fiercely will still have been affected by the warming climate" - but what I'm saying is that it's not only "higher temps and drying" but also inadequate attention paid to fire-wise indigenous vegetation; reckless and/or greedy land development that ignores fire risks posed by poverty; etc
'Drying out' plays a part. But in this instance (Cape Town, this weekend, with its Mediterranean climate of wet winter/dry summer) the Table Mountain slopes are actually not dry. There's been a couple of years of excellent rain, resulting in full lakes and catchment. The slopes are relatively green, streams are flowing, it's not been a hot summer.
Perhaps this is why the three men seen dashing about the slopes in the dark last night, lighting new blazes, were having to work so hard to get their fires going when the wind had dropped.
I'm suggesting all 'fire!' media articles should be examined case by case, rather than lumped by journalists under one 'global warming' headline