

It’s referencing the spikes the app sees whenever there’s a republican event around.
“On the night of July 17—the Sunday that check-in for the [Republican National] convention began—there was a 120 percent increase in users online in the area, more than all previous evenings in July. As of last Wednesday, a representative from Grindr tells Broadly, “more than a thousand guys have used the app near the Quicken Loans Arena.” The total attendance of the RNC is estimated to have been roughly 20,000 people, so this data suggests about five percent of attendees used Grindr during the convention.”
https://www.vice.com/en/article/cleveland-was-bombarded-with-white-dudes-on-grindr-during-the-rnc/
It started as that, but when you have an app designed for hookups and sex, turns out what type of a person you are in bed and what’s between your legs are actually very relevant information, so they just opened it up.