How does this determine signal wrt shared core values (honesty, trust, respect, open communication, compassion, authenticity, equality)? Interests ebb and flow over a lifetime, who you are as a person is more material to a successful, lasting partnership.
They do not (maybe eharmony?). What leads you to believe they are doing a good job? The challenge is that traditional meeting opportunities have declined (church, friends, third spaces), dating apps took off, but everyone is unhappy that they cannot Uber the person they want.
(married ~17 years, n=1, ymmv)