As someone who knows a fair amount about compilers and interpreters, I would be highly skeptical of that underlying statement to begin with. Going down this path is a road that stretches the bounds of credulity.
But I think I would also dispute the notion that programmers have unique coding styles in the age of widely accepted standards and practices.
Practices, I would concede are coding styles.
Though, even then... it's not like we're talking about something like assembly, where the style you use would really be pronounced.
We're talking about mostly .net and java applications, that use commodity skillsets, that adhere to certain sets of rules and guidelines. You don't give up your best practices and behaviors when you decide to write something that breaks the law.
You don't change for github, either. In general, most programmers work with whatever is acceptable for the platform they're using, and the rest falls into place.
The exception, of course, being amateurs, and possibly some hobbyists... who don't really know enough to do anything all that malicious to begin with.
This is a witch hunt, plain and simple.
Unless of course, they're actually analyzing writing styles, and they're trying to bring all of us advanced level programmers out by saying something idiotic, knowing that we'll all comment on it.
Fuckit. They're probably doing that anyway.