Is 30 too old to play chess?

I'm curious, could you elaborate on the notion that age is a limiting factor when it comes to playing chess? Specifically, why do some people believe that 30 is too old to start playing chess? Is there any evidence to support this belief, or is it more of a societal stereotype? Additionally, are there any examples of accomplished chess players who began playing later in life, potentially challenging this idea that age is a barrier?