Modern society doesn't' change the fundamentals of human behavior and needs. Per your example we still need a community with strong bonds, a diet of lean proteins and greens, and a dusk till dawn sleeping pattern to function optimally.
Sure I still need to sleep and eat, but that's about it. We're talking million of years of slow and incremental changes dictated by environmental constraints VS 200 years of exponential technological almost entirely tweaked for convenience.
Look at obesity, diabetes, back pain epidemics ... clearly most people diets / lifestyles are not matching what evolution engineered them for.
> Per your example we still need a community with strong bonds, a diet of lean proteins and greens, and a dusk till dawn sleeping pattern to function optimally.
To "function optimally" yes, but even without that you can live very long, reproduce &c. A few thousands of years ago you'd just die.