As in with the intent of causing significant distress or harm to a real person. That's how I read your framing of it. Jerry can take a few rebuys, regardless of which account it is.
Ultimately, only Akuma knows what he meant, and for the record he is not native. Many of us aren't either.
The original quote was from Firefox and probably meant as a variant of "don't be a d...." If you want fairness or whatever.
IMHO, if you've been known to play a prolific ganker (2000+ noobs, I heard), constantly blaster various hatred/twisted stories/... against someone etc in and out of game (I don't know exactly what's going on between Jerry and Akuma, it's mostly in German anyway), make it known that X is your alt, fly in open in Deciat while Spear is on patrol (aka asking for it, setting it up) then it shouldn't come as a surprise. There is a person behind these actions, especially the ones that are happening out of game, not an imaginary pixel-character. There is no right or wrong here, just human nature and a bunch of pixels that went boom. Compared to what we've been the subject of, this is a storm in a tea-cup.
As I said, these folks would do the same on us and I sincerely doubt that anyone of us would throw the salt bucket over this.