Steem entire ecosystem could fit into a smart contract on Tron with similar functionality as we have now. I am concerned it wouldn't be able to handle the transaction volume of Steem without drastically impacting.

Im not a techie but if performance would be impacted then indeed it cannot be cloned to TRON. It stops being steem at that point.
My fear is in his claims, which im hoping he goes back on today that he will token swap Steem. Even an airdrop would be a negative since now you have two competing chains using the same dapps. (Unless he does a peg)
Im very fearful of this change..
Dubrovnik is nice this time of year