It does raise the bar slightly though, so is still worth doing. Instead of simply running the pyc files through a decompiler as would be the case without obfusc

It does raise the bar slightly though, so is still worth doing. Instead of simply running the pyc files through a decompiler as would be the case without obfuscation, one has to reverse engineer their modified Python binary to figure out the altered format of the code blocks. This is not a very common set of skills.