1) These social media accounts were used by this bitcointalk profile to join many bounty campaigns.
That is completely fine.
2) So having a transaction with someone indicates those accounts are alts?
Nope.Having 'frequent transactions' with them and posting one after the other in the same bounty threads repeatedly does raise suspicions.Otherwise,what is the probability of your friend posting right after your post in the same bounty thread on the same day ?
3) If still this is the case saying sending money to someone shows that they are alts, then the way eth had been cashed out you all won't believe.
That's not the case here.
4) If you want I can explain you the whole thing in a pm becuase it is very long and I don't wether posting that here would be correct or not.
Explain that to the person who left you negative feedback.