Have Race Direction suddenly decided to have a crackdown on jump starts? After a long period without a single jump start, we suddenly have three in two races. Look at the video, and it's clear the reason Race Direction issued two more penalties for jump starts is because two riders moved on the grid in Austin. A random statistical distribution tends to be lumpy, not smooth, and so random events look like they are clustered together. And at the point of the race where the riders are most intensely focused, occasionally mistakes will occur. Sometimes even simultaneously.
The two culprits in Austin were Joan Mir and Maverick Viñales. Mir's infraction was the smallest, barely moving and then almost coming to a stop. He was quietly seething after the race, angry at a penalty he felt he didn't deserve, and at the disproportionate nature of the penalty for the tiniest infraction in which he didn't gain an advantage, like Cal Crutchlow in Argentina. "It ruined my race," the Suzuki Ecstar rider said. "All the weekend for this. It ruined my whole weekend. When I see my lap times every lap and the pace that I had, it makes me even more angry because sincerely we had today a great pace to fight for the podium or top five, sure."