No, they wanted more people than just the supports to PLACE wards. That's why they gave everyone the free trinkets at the same time.
Sightstone existed long before the ward cap and trinkets, but Riot didn't have the guts to eliminate it at the same time they were reworking the rest of vision. I still think they should. It was an improvement over spamming the old green wards, but compared to trinkets it's now the worst part of the vision system and is holding the support role back.
Let supports support with their kits, not by spending 800 of the gold they already have less of on an item with terrible stats so that they can take on more than their share of what should be a teamwide responsibility.