I think it's realistic, sadly, not pessimistic. Why would men ever agree to something that disadvantages them, when they're much happier with a certain degree of sexism and power? As humans, disadvantaging ourselves is fairly counter to our very natures - so in a way, I don't think men can really be blamed for wanting to hold onto their power over women.
They're happy to allow women the illusion of equality...up until a point.
They tolerate a degree of equality because it keeps women happy and cooperative, while they still get what they want for the most part. I think a lot of women subconsciously realise this, which is why they excuse men watching porn, or going to strip clubs, for instance - it's the old 1984 'Do it to Julia!' situation. Or with women being groomed into 'wanting' to have increasingly extreme and violent sex that was very rare to engage in only a few decades ago, or having one night stands and casual sex, etc.
There's a very careful balancing act going on, where society is allowing men the outlets they want the most (usually to do with sex), in order to enable women to have rights in all other areas.
But when women's demands for equality begin to interfere with what's really important to men, then they still hold the power, imo, to strip away the illusion of equality and put women back in 'our place'.
I also think that maybe there isn't a solution - maybe by virtue of our differing needs and desires, men and women as demographics are destined to always be at odds with each other.