I think bearing the 'mental load' is a decision, and a choice. If your husband/partner chooses to act out and not share the management of your household, then it's about having a firm conversation about expectations.
For example, if I ask DH to put the bins out every week, I don't expect him to be reminded or ask me which bins are going out (recycling/rubbish). He is a professional at work and understands the meaning of being responsible for a task, therefore he can apply the same reasoning at home.
Certainly in generations gone by, women may have taken the bulk of household management, but in this day and age, you are only the change you choose to make.
On the flip side, if you want to take the whole mental load, then you should be able to do that too, without being micromanaged by DH/DP - once again, it's about setting up an arrangement that works for you.
I strongly believe some women are pre-conditioned to think that men can't do certain things - which is a little bit sexist really. It's a societal construct and needs to be dismissed.