To go down a storm means to have great success, but in this sentence they were confident it would be received horribly
Context: "We start with all the young dudes, a song that julian and I managed to convince the other lads to play, confident that it would be received horribly at all by anyone."
Hypothesis: We start with all the young dudes, a song that julian and I managed to convince the other lads to play, confident that it would go down a storm.
Based on the context, is the hypothesis true, false, or unknown?