I am bristling a bit at the suggestion that split finances lead to divorce. I honestly don’t think it changes anything fundamental. You either agree on your priorities and approach to life and finances, and therefore spend your money in a roughly compatible way automatically, or you don’t. Keeping money in one pot does not automatically align or keep you aligned. It’s either a problem or it’s not. Doesn’t matter where you put it.
In my relationship, we avoid force or ways to control the other person. It’s a voluntary relationship. Love is the glue, not a shared bank account or financial dependence.