Personal opinion: A little thought should be given to replies, the first reply in particular.
The @hermit quoted example thread opens with a person mentioning arduino and Mains power and how to mix the two with no mention of Kicad… obviously inexperienced with dangerous stuff.
The post shouldn’t be touched with a 10 foot (3metre) pole. Should have been stomped on with the first reply.
This one: newbie-needs-routing-help. A self confessed newbee struggling with Kicad and new to PCB design with no mention of what is to be accomplished, should be helped. Maybe later, if the schematic is posted and Mains and arduino are mixed, or the thread strays too far into PCB design, caution should be given or the thread closed, but the original post is about “Help with Kicad”.