Anyone who calls Sanders more viable than Trump is not interested in a factual discussion. You might like Sanders more than Biden, you might like his politics

Anyone who calls Sanders more viable than Trump is not interested in a factual discussion. You might like Sanders more than Biden, you might like his politics more. But you aren't entitled to your own facts, and the facts are that Biden has a decisive lead that is almost impossible to catch up. Biden beats Trump in polls by a much larger margin than Sanders. Sanders was not able to motivate a larger voting turnout in the primary elections. There is no basis to call Sanders more viable.