The guide has not been updated for the post-nerfs meta yet, it is still months old. We will update it soon.

The Lich King. Lich King can defend you as a Taunt minion, and the cards from Lich King can be game-changing. Yogg is unreliable – its most reliable effects are area-of-effect damage and card draw, and you generally don’t need more of them. Baron Geddon is really good when you are already Frost Lich Jaina, but mediocre before that.

It means that weapon removal is still not the prevalent tech choice, and hence does not render Medivh unplayable.

The matchup data is still a mismash of pre-nerf and post-nerf data. Most of those decks lost something with the nerfs.

Edit: Check out the Over time tab, it shows a nice view of the winrate: https://hsreplay.net/archetypes/147/jade-druid#tab=overtime

I cannot quite agree that Jade Druid died with the patch. Perhaps it is not exactly tier 1 anymore, but it is a solid tier 2 deck according to HSreplay statistics, for example. I actually played a bunch of Jade Druid for the guide and had a good win rate playing it, it is an easy climbing deck still.

As for Medivh, yes, there is some more weapon removal now than before (roughly 15% of decks run weapon removal now compared to mere 5% pre-patch, but the trend is already going down) but it is nowhere near as prevalent as Silence (roughly 50%). Furthermore, matchups where you want Medivh, such as Warlock, hardly run weapon removal still.