I think it is, and if you don't want to take my word for it, John Carmack thinks the same :)
There's an old video [0] where he talks in-depth about his explorations of functional programming. It's perhaps a bit more about Haskell than about SICP, but in it he's also quite enthusiastic about what a veteran programmer can still learn from this book.
11 minutes in, he mentions SICP as a book that he ended up working through exercises "in the past year" (so 2012 timeframe, well after the original Doom but before the reboot).
Still haven't clicked it, huh? If you did you'd see that the link takes you to straight to the moment in the video where he starts talking about functional programming.
There's an old video [0] where he talks in-depth about his explorations of functional programming. It's perhaps a bit more about Haskell than about SICP, but in it he's also quite enthusiastic about what a veteran programmer can still learn from this book.
[0] https://youtu.be/1PhArSujR_A?si=OD8pGYsoGC7RXPVG&t=125