“Bro just use sockets lol” completely misses the point. When you decide you want message based IPC, you need to then design and implement:
Message formatting
Service addressing
Data marshalling
Subscriptions and publishing
Method calling, marshalling of arguments and responses
Broadcast and 1:1 messaging
And before you know it you’ve reimplemented dbus, but your solution is undocumented, full of bugs, has no library, no introspection, no debugging tools, can only be used from one language, and in general is most likely pure and complete garbage.