The purpose of the go_router for Flutter is to use declarative routes to reduce complexity, regardless of the platform you're targeting (mobile, web, desktop), handling deep linking from Android, iOS and the web while still allowing an easy-to-use developer experience.
e.g.
should match
/family/f2
,/Family/f2
and/FaMiY/f2
while preserving the case of the param passed to the:fid
argument.