Yeah, of course, it’s all there in binary. For programs of course that’s not a problem, but for data that you may need to look at any time, it is. It’s harder to interpret both for humans (significantly) and both for any program that want to make use of it (unless they use the specific library that came up with the format, and by that also pulling in all its libs transitively)
Binary data is not much less obfuscated than the system files of windows. It’s all there, you can read it