zsh: is there a problem with always enabling extended glob?

I recetnly came across setopt extended_glob ...in order to enable extended globbing which allows for a number of cool wildcard additions, like excluding specific patterns, for example: ls ^foo* ...will use ls on every path in your current directory except for patterns that match foo*. I found one tutorial suggesting to put setopt extended_glob inside your .zshrc, but I guess since many zsh config templates miss that option and the option being *disabled by default* it has some downsides or even side-effects? Or is it absolutely harmless always enabling extended_glob via putting it inside one's .zshrc?