If you read the explanation of how the RISC OS cog came about, it seems a lot more thought went into it than is being suggested here. I suspect that Richard Hallas might be a bit miffed at being described as a 12 year old, too.
As for changing the logo again: why? The cog is universal now: it appears in the RO4, RO5 and RO6 logos, ROOL's logo, and in a lot of the platform's publicity. As more logos get redesigned, it's replacing the Acorn as the standard symbol of the platform, regardless of supplier.
And just as this is happening, some people want to design a new logo to replace it, thereby diluting what 'brand image' we have. Why?