what percentage of the population do you think uses dating apps? And that is to say those who are not married, looking for relationships, and of the mind to use a dating app? Don't forget to include people happily married in their 60s, or with kids in that estimate. I would posit a guess in the very low double digit percentage, even in Silicon Valley.
To be fair, it's TechCrunch. It's not reasonable to look at the entire world population as a plausible audience. Heck, English speakers and people with access to the Internet are both minority groups worldwide.