that's true, but on the other hand it is more that just assumption - it is little bit of analysis of from which wallets SIGT are moving. All wallets I saw  had only inbound transactions till about start of Sep - when Cryptopia put SIGT on maintenance. And now all of them are emptied. Below just an example



Wallet is not yours. It belongs to Cryptopia. They can do whatever they want with it. Now they are consolidating it , before allowing to withdraw