Within less than 24 hours, my statement is no longer true :(
I should have removed 100% of my STEEM coins off poloniex.
I am actually looking to lower my poloniex balance overall just to be safe. It would be a truly sad situation if poloniex temporarily became disabled as a whole and trapped peoples crypto with no options to buy or sell.
Bittrex seems like my substitute of choice.
Cheers!