When Taylor Swift’s superfans took to Ticketmaster last November to purchase Eras Tour presale tickets, they caused the site to glitch and crash, prompting outrage and even antitrust investigations. Now, boomer and Gen X superfans of a different musical artist experienced their own version of presale ticket hell — prompting a very different website to crash briefly. Fans of the Rolling Stones took to AARP’s website in hopes of scoring tickets to the band’s upcoming Hackney Diamonds Tour on Wednesday. AARP, or the American Association of Retired Persons, is an official sponsor of the 61-year-ol...