I think it's just people who ain't so good at flashing really. They haven't nerfed it or anything.
What I love seeing is, when I'm the jungler, I run up, and they flash away.. like, they've blown flash, and all I did was click in their direction. No attack, no skills, I'm not within range, they just insta-blow flash for me to come back in a few seconds and secure the kill. :/
Ah the joys of jungling.
The walk up, watch them blow flash, then walk back to the bush. Wait 3 seconds and kill...
if you're able to burn flashes and get kills this way then the people you play against suck hard