Toki pona is not sufficient for complex communication in its constructed state. It was designed for the exact opposite of that, and was never intended to be an auxiliary language. Plus it's based on the discredited and vaguely racist Sapir-Whorf hypothesis.

Also grammatical "gender" =/= gender the social construct.

Not to bash it is a project in its own right for its original purpose (basically language as meditation), but it's not in any way supposed to do or be what Esperanto wanted to achieve.