I think at the end of the day people don't associate "bootstrapped" with "strangers' money." Of course the cofounder says the definition is "nuanced," because it would have to be in order for them to claim the descriptor, a descriptor that carries weight as a mark of independence. VC is not independence.

They came from Tinyseed, why wouldn't they use "fundstrapped?" Because it doesn't sound as cool, and they know VCs aren't cool as far as the independence denoted by the term "bootstrapped" goes.