I had a shocking surprise this morning. . . .

My top laner told my ADC to build sightstone. Yes you read that right.

It was late game, 40+ minutes into match, (which is also a surprise as most matches end by 26 minutes,) I was playing Leona, building tank. Our team was getting kills and I was using my trinket to ward dragon and baron, while warding important pathways and choke points while dragon and baron were down.

I get four out of six items finished, somehow got several kills even though i had no damage items at the time, and out of nowhere I see in the chat,

"Caitlyn buy a ss."

Now before anyone says, "Why didn't you build one?" Not at a single point in the entire match did anyone ask me to build one or say to me that we needed one. So instead of the standard, "Leona we need a sightstone!" I see our ADC being told to build one. And not just once either. Caitlyn was told again later, and then was told she wasn't dealing damage so we couldn't rely on her and needed vision instead.

I seriously doubt I was doing well enough to shift the sightstone slave stick onto someone else, so what gives with this? Is it something new that I've missed until now or something? Are ADCs responsible for vision control as well now?