Lisp syntax is a lack of syntax, it takes five minutes to learn. Everything being an expression, expressions being replaceable by their evaluation, quote/unquote/quasiquote, macros is what'll take time to adapt to.

Conveniently analysing program state while it's running is more a feature of languages that run in an image than something lisplikes have in common, like Common Lisp, Factor and Pharo, but not Racket or Guile.