To answer a question asked in the above responses, I did not convert the 3.32 ETH to cash to send it out. It was transferred to an external Coinbase wallet, according to the people at Coinbase I spoke to. I kept a screenshot of the transaction details, as it was just after I sent it that I began to feel the "Oh SHIT......" coming on.
If i understood you correctly, the perpetrators of this 'Elon Musk crypto scam' received the stolen funds you transferred to them from your Coinbase account on their own Coinbase account, it is strange to see scammers receiving stolen funds on kyc platforms. Did you report this loss when it happened? I know it is almost impossible to recover stolen funds, but you have nothing to lose and it was sent to a kyc platform. As for tax, if you can prove that your funds was stolen, i don't think you should have any problem.
What I'm not clear on is what he means by “external” Coinbase wallet. In any case if it is from Coinbase it should be KYC and it should be easy to catch the scammers, as you say it is a bit weird but it sounds to me that there was a scam a few months ago that was similar.