Exactly.
Yoel was reading the single jabs and one-twos pretty easily. As soon as Rockhold started doubling and trippling up on the jab while moving he was having a lot of success. That is why Yoel started to bumrush him, because he felt pressured to do so. Unfortunately Rockhold tried that leanback lead hook counter that he likes to use, which is also the same move that got him KO'd against Bisping. He's simply not fast enough with it nor have the timing for it, when he gets tired. He always gets caught when he's pushed against the fence anyway.
He couldn't really use his southpaw weapons as Yoel was standing in southpaw most of the time too. A shame really.
I don't think their gameplan was terrible. Circle on the outside, use frontkicks, use the jab and reach and move away from the power of Yoel. Keep active. But, that gameplan entails that there will be moments of the fights where you have to be able to defend against Yoels flurries. In hindsight, doing that, but mixing in takedowns and TD threats might have been better, but at the same time Yoel catches guys going for takedowns with flying knees all the time. He's a hard dude to fight.
I think it's a copout saying the gameplan was terrible, as it was working pretty well untill Rockhold got caught, and especially when when he was actually doing what his corner told him to. He simply didn't have the defensive responsibility to pull it off all the way.