I think Yoona and Sooyoung have just been getting closer recently and it doesn't have anything to do with popularity. I might believe this if it were when they first debuted because Yoona was the only well known one back then, but now all the SNSD members are famous. If anything, Sooyoung's popularity has gone down a bit recently, so I don't think this is true at all. Yoona and Sooyoung just have a stronger friendship now than they did before.
I'm not sure this is true, i always thought that Sooyoung ways always in her own corner and Yoona in her's, tbh, i don't even think sooyoung is getting exacly what she wants because Yoona is known better in korea due to the many shows she's been in, as for Sooyoung i can only admit she's only 인기 for her personality and for being in Snsd, so if this is true 또는 not idk, but i sure hope it isn't true, because if it is snsd may be in the hot water zone, because when 2 members in a group fight it may lead to much worse things, so lets all just ignore the fact that she is doing that and 옮기기 on.
don't say somethings like that if 당신 don't have proof 또는 anything, because this kind of 기사 are visible on 구글 and some people who don't know the group may think this is true, 당신 shouldn't think some things like that in the first place, because 당신 don't live with SNSD and 당신 don't know anything about them,