"... I think FP programmers seem to have a distaste for debuggers ..." I'm unsure that I'd make this assertion so broadly. For Haskell, I'm usually left using Debug.Trace because I've found the traditional symbolic-step debugger is less than ergonomic in the face of lazy evaluation. In Common Lisp, the debugger is my best friend.

"... and graphical debugging/development environments" The loud ones might be saying they use Arch btw (on ThinkPads no less) and lean heavily on using neovim inside the current popular Rust rewrite of tmux, but I personally don't care for it.

VS Code is neat. I mostly still use Emacs because that's where the tooling investment has historically been, but my ideal is definitely much closer to Smalltalk-meets-Oberon.