Like the many that will, after me, assume Hacker to mean the C in CS. Technically, you are correct, and I agree. But I must point out, that actually, you are wrong - the general use of the word belongs to computers.
Most people would have no idea about Richard Stallman, and I maintain that due to popular media the general public associate the word with computer technology.
This is Hacker News, not the general public. If we don’t know who Richard Stallman or what a hacker is, who should?