This post seems like more of a screed against Grindr than anything else.
I can assure you that my first gay "experience" was far more sordid than the one you've imagined. This was a long time ago, before Grindr, before iPhone, before the Internet, before the Mac, and before the Commodore 64. It involved a perfect stranger and took place inside an iconic landmark that 20-90 million people saw on their televisions each week in the opening credits of a hit TV show.
I've never used Grindr, and it doesn't appeal to me. Partly because I came of age making eye contact with attractive strangers across crowded, smoky (and later smoke-free) bars. But mostly because I've been off the market for longer than Grinder has been around.
If Grindr didn't exist, then something would take its place. It was (so I heard) a major use that people had for Craig's List. Before that, there were AOL chat rooms. Baths, bars, gas station rest rooms, sand dunes, etc. You're not going to stop gay teens from having that first "experience". But, just maybe, with high profile role models such as Cook and positive images for gay people in popular culture, more gay teens can be out at a younger age, and they can loose their innocence the way their heterosexual cohorts do: with their date on Prom Night.