Trudeau supports male criminals being housed in with females. His ideas around "inclusivity" are of the kind that massively disadvantage women. So it is not a surprise he wants to interrupt and mansplain all over women.
From an ecological point of view, every time you use humankind instead of mankind it takes up 2 more bytes. So if everybody in the UK used it once a week that's an extra 21 GBytes of storage (assuming backups) every year.