It's funny because Burr not having real beliefs was the real-life Hamilton's propaganda about Burr. So like, it's totally fair to have Hamilton the character think and say that- but the show just treats that as the gospel truth

iirc he did write some anti slavery stuff, but i just googled it and i was thinking of his son, who obviously was also unsuccessful but seems to have been genuinely committed to opposing slavery from my 1 minute of skimming