It is not arrogance.

It's awareness of the physical church turing thesis.

If it turns out everything is fundamentally informational, then the exact complexity (of emotion or consciousness even, which I'm sure is very complex) is irrelevant; it would still mean it's turing representable and thus computable.

It may very well turn out not to be the case, which on it's own will be interesting as that suggests we live in a dualist reality.