I can agree that 99 wards is a bit many, but having games where your 5 man team has individually dropped 9, 7, 6, 6, and 2, wards is pretty darned bad.
I'd say my reasonably long games have 50-60 wards placed and we have reasonable vision control, although we still get caught out at times and having an extra 10-20 wards placed may have saved us from some bad encounters.
It's almost undeniable how important vision is. At times I feel like my biggest contribution as a jungler is that after my first recall I grab a pink ward and between that and my trinket get vision in both rivers early. Just my last game it resulted in a kill on the enemy jungler, a couple successful ganks, and a dragon. Vision isn't given nearly enough credit. I actually still wish there was some way for vision to grant assists (as someone who loves getting a Jinx ult kill on someone recalling in a warded bush, I wish I knew which teammate got the ward there).