I'm very concerned for you with what you're saying here.

The narrative your creating equating 50/50 split in divorce to rape, ignoring any recognition that marriage is a relationship of equals, and believing that one spouse "sacrifices to achieve [their] goals" sounds like its describing some kind of victim complex.

But it’s been said by many others that this is the principal way in which women take advantage of men,

HUGE CITATION NEEDED here. Don't be shy. Name the "many others". My guess is your sources may also point to the cause you hold this male victim complex.

Are you unaware of the historical context where for a good chunk of modern human history, prior to 50-50 split, women were held in loveless and abusive marriages because if they left they would leave with nothing, and as traditional raisers of children they had few, if any marketable skills to earn a living if they were to divorce?

I’d rather see resources split equitably according to needs and what people deserve than a completely in-arbitrary split that’s sole purpose is to spare court time and resources.

50/50 split is literally the definition of the word "equitable" where each spouse is treated the same. What criteria is your "what people deserve" based on? Are you suggesting that if one spouse makes more money during the marriage then that spouse should take more money away in the divorce?

But what’s the equivalent of alimony for the breadwinner, hm?

You're aware that alimony has nothing to do with 50/50 split of marital assets in divorce, yes?

I agree the primary caregiver should get something; they do sacrifice, after all.

How charitable of you. Whatever you think they should get, you don't believe its half of the marriage assets apparently.

and let’s not pretend the primary caregivers don’t also get things out of their choice that can’t be quantified in money, so it’s not even like they deserve to be paid in full for their work.

A marriage isn't supposed to be a transactional relationship. A divorce isn't about rewarding one spouse or the other. Its an act of separating a pair of people that were sharing life and finances (and sometimes children) so they can go their separate ways. They build the marriage together and share everything. When they split they each take half and go on with their lives.