I think mostly a difference of interpretation.
I have played worlds where right after BP I got spiked senseless (ie. they didn't spike barbs, they spiked 36 point players so I'd hit them right after BP and kill myself on low morale) and I have quit 2-3 worlds when it has happened because I didn't care enough about the world to bother rebuilding. I don't deny that, but I wouldn't refer to that as being gangbanged.
You can argue that I should have scouted the villages before hitting them, and well, you'd probably be right, but at the same time, for most people it's better not to, since if they do they're giving their neighbors more time to beat them to the full hauls in the small players villages, and being the first to get them before they're emptied is often vital to getting a good start.
I hate spikers, I think they're cowards, it's anonymous, and that's typically why they do it, because they know they can't be retaliated against. I however have no issue with people attacking me, since at least I always know who is attacking me and can retaliate should I choose in such scenarios. I do consider getting attacked by many people early to be gangbanged, (but not being spiked) and on that basis I can honestly say that I have never quit a world due to getting gangbanged.
The last three worlds I remember getting gangbanged on:
W47
W62
uk10
I played all three worlds much longer than usual. W47 I played till rimmed, W62 I got rimmed and restarted, and uk10 I wasn't rimmed, but was first to 1 million ODD due to a family tribe attempting to rim me quite early.