Even the low level implementation of protobuffers is pretty uninspiring.

Adds a lot of space overhead, specially for structs only used one yet not self descriptive either.

Doesn’t solve a lot of problems related to changes either.

Quite frankly, too many are using up in it because it came from Google and is supposed to be some sort of divinely inspired thing.

JSON, ASN.1, and even rigid C structs start to look a lot better.