That said the concepts I am learning about in FP content are things I have been doing for years but this is just way more systematic.
I have a similar feeling. I’ve noticed a lot of overlap with techniques I use and those of FP, without having much of any structured FP experience. I think using React got me a lot of if, with the pattern of props being read only. I tend to think of every function as a transformer function now. And I love chaining array method calls together :D