Comment by mcrute

Yes, everything internally has many flags (hundreds or thousands), so much so that they raise the command line size limit (ARG_MAX) in the kernel. I think it was around 2GB when I left. The internal frameworks really encourage using flags too, there's a @Flag decorator for Java that's sprinkled all over the code and sometimes nested extremely deeply down chains of classes that promote this behavior (abseil, (https://abseil.io/docs/cpp/guides/flags) has macros for this too).