But doesn't putting somebody on SICP in the hopes of helping them learn functional programming (is that SICP's concern?) sound to you as... aspirational advice? The book is as famous as it is infamous.
the point is more that anything you learn, you often want to try out the new toys. But those toys aren't your A game and we haven't learnt the lessons yet of applying things to achieve real results, so often that can skew our productivity. Whole new frameworks can leave us completely incapacitated when we hit the edges of what is commonly done until we either dig through things ourselves or find someone to answer our questions.