I totally agree with you that there is a difference between big moves and smart moves. To me a big move is risky and impactful and not necessarily smart. I also agree that I would prefer the winner to have made smart moves throughout the game and if they did then I wouldn't call them a goat.
You ask if taking out Wardog was a big move, since it was unanimous then no it isn't as the credit gets split between everyone and there is very little risk in the move.
Same with the split vote to take out Ron, the majority of the tribe all had the same idea and there was little risk, so it isn't really a big move.
Remember the vote to take out Eric? Julia and Gavin came up with the plan via information by Wardog, Victoria was against the plan as she thought it was too early to turn on their own alliance (which I agree with), but didn't have the influence to stop the plan going ahead. Can you tell me anything she has done between the Eric vote and the Ron vote?
I call them goats because they have pretty much sat under the radar, watched as the big targets got taken out and now suddenly find themselves in the majority.