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Transaction fees are pretty damn low, so there's really no reason why funds should be pooled--and given that blockchain transactions are the only good way to prove accounts are connected, people shouldn't be doing this.
Nope they ain't; being a bounty hunter I do know that trx fees are an issue; especially when most tokens can be sold only on CExes due to good liquidity and prices.
Suppose u have 400 tokens of X ICO; which cost 0.0001 ETH each; you have 0.04 ETH worth of tokens; selling them on a CEX and withdrawing the ETH will set u back by 0.01 ETH approx. in any circumstance (most CEXes demand 0.01 withdrawal trx fees which is preposterous and a loot); so pooling all tokens of suppose 15 hunters will be worth 0.6 ETH and the fee of 0.01ETH will get divided into 15 parts.
I do believe you don't trade in ETH and token dust; so this might not be the perspective u thought of; but yeah it is your judgement.
Also, I do agree that blockchain trxs are one of the best way to prove connected accounts.
They got recruited to spam like suicide bombers get recruited by ISIS.

P.S.: I dunno; but I guess the scarf brought out the racist in you.