Only Bitcoin transaction relationship are not enough to show alts between users , because people of Bitcointalk are not only connected here but they have better friend circle at social media ( WhatsApp and friends zone ) .
Relation between the ethereum address and bitcoin address is the one main thing to consider them as alts so why did you do that,if you came up with story that you were just friend then 1000s of alts were tagged based on these rule only so if your negative trust got revised then tons of people will boom up with their story to relate their address connection.