To reiterate, the first paper does not specifically pertain to dating apps, and the methodology of the second article is flawed (you want to know whether people meet online, so you ask people of whom >50% you found online, great technique)—so it might save someone who cares about that kind of stuff a click (a few clicks actually, since the methodology is buried in a separate article). If you don’t fall into that category, feel free to move along.
And I don’t know the author of the second article personally, but if I did of course I would point out an issue with their data.
It's an EXPLICIT footnote! See "Note; Here [is the report's] metholodgy."
> Methodology of the second article is flawed (you want to know whether people meet online, so you ask people online, great technique)
The methodology goes into statistical techniques to control for biases (e.g. language, gender identity, sampling method, etc.) See Methodology > Weighting about what they did with their ~5k responses.
1st click to go to the article, ctrl+f to find methodology, 2nd click to go to methodology. See 6000+ people recruited via web. The rest seem to amount to fewer than that. Am I the one being difficult?
And yet you admit
>I didn’t bother checking results. Both are US-centric.
...
You need to let the Stanford Professor and Pew Research know they're unqualified to perform research. :S