What SS doesn't take into consideration is the survivor benefit neutrality. That is, while male and female are treated as having the same life expectancy (we know it isn't really), the life expectancy of one person of a married couple surviving is considerably longer than any one individual. Delaying SS for the higher earner is better than one might think.
I'm aware of that, and my late wife was one who failed to beat the house by a substantial margin. Nothing on the horizon that would put spousal benefits in my decision matrix, but that could change as decision time approaches.
To clarify my point, the conventional wisdom is based on assumptions that do not apply universally. Mine are no spouse (at this time), and the desire to leave a clean estate for my kids (not likely to change).