Ok, but your response rate will also contain some people motivated by the passport, visa or standard-of-living discrepancy. It's not trivial to weed those out, unless you put something like a canary in your profile ("Message me with your favorite color"). There will also be scammers, fakes, catfish, pig-butchering/cryptobunnies, AI fakes.

Example: on a dating app, change your zipcode to Manhattan from any other US location, and you'll get tend to get flooded with matches from eastern Europe and central Asia [if you turn off the distance/country filter]. You can A/B test how much zipcode affects your response, it can be huge.