Not really; they just did OO with C structs and function pointers, this is actually how it used to be done in high- performance code like computer graphics before C++ got fast enough. And the " obfuscation" was passing the -O flag to the compiler...

s/used to be done/is/

Also, the Linux kernel, and any other half decent large C program.

Any group of reverse engineers who notice C calling conventions and conclude the function parameters are so uniform that it must absolutely be a deadly new HACKER LANGUAGE need to be taken out back and shot, but I doubt any actual engineers were responsible for that announcement.