Most griefers need attention. If need be negative attention from anonymous strangers online. Have pity on them.
I don't have pitty for their deranged way of interacting with others, every person with even a tiny awareness of social behaviour knows that actions like the ones OP demonstrated are anti social, immature and plain dumb.
If negative attention is the only way you can get some acknowledgement from others then you're having a serious problem.
OP seems to be part of that category judging by his urge to post his despicable behaviour shamelessly and emphasizing the fun he has doing it on this forum.
I'm well aware that there are plenty of these socially disconnected individuals present in this world, that doesn't mean they deserve any pitty or understanding though.
Accepting them despite their purposely neglect of any social skills will just confirm their right of existence and doing.
Some may have a reason for their behavior but that reason can never be used as an excuse unless the person can be held completely unaccountable for their actions, I do pitty those because they can't even help themselfs let alone others.
The phrase that it's called Elite "Dangerous" can't be applied here because you see this kind of behavior everywhere.
To say that multicrew works as intended like FD so blatantly states is utter ignorance denying the problem these individuals create and giving them a free pass to continue with their disruptive actions.
It's either naive or ignorant to shake this off with "it works as intended" or "It's not a nice thing to do" especially when this problem has been mentioned to happen before the release of this feature.
I'll get my coat now and return to solo play.