It's not.

I can't reproduce the exact datapoints from the site using `git grep`, but most of it seems to be down to a single commit that removed repeated usage of fuck from one file: https://github.com/torvalds/linux/commit/a44d924c81d43ddffc9...

I'm getting the feeling someone has strong feelings about IOC3. From a quick bit of googling that appears to be a Silicon Graphics ASIC

why did you have to ruin my hopes and dreams with facts and research? /s

(that was actually interesting to scan through, dunno why but i found the `[it] is fucking fucked` -> `[it] is broken` lines hilarious)