I'm sure of that but it seems that LISPs being too flexible hurt their adoption rate somewhat and the mainstream preferred to have more guardrails on their prog

I'm sure of that but it seems that LISPs being too flexible hurt their adoption rate somewhat and the mainstream preferred to have more guardrails on their programming languages. Ultimately developers are the ones who decide what they like and popularity quite often reflects what's being done commercially. I agree about the fads part.