I don't even know what this is supposed to mean. It would've been better if you ditched the failed sarcasm. Are you questioning that:
1. His ability didn't get explained at all? Because it didn't, absolutely zero explanation on how he does it, how many times he can do it, range, time, nothing.
2. He can't use it twice in succession? Because it's a fact his eye powers diminish after he uses it too much, and they didn't after he transported everyone.
3. He didn't transport them, he flew them there? That's ridiculous, since he stated Shin's base is in Kaguya's dimension, and you can't just fly into a different dimension.
1. Tomoe shows how much power eye has, that was shown, sasuke began with gaiden with 0 tomoes means he was traveling to kaygua dimension before it started, to track new big bad
2. We don't know what he can or can't use in succession cause he used his phase shift without tomoes, but he never used susanoo without tomoes(sasuke loves to spam susanoo)
3. When talking about kaygua's dimmension he was referring to it as the reason he was weakened as it takes a lot of chakra, hence his eye power was weakened, as naruto asked(started gaiden with 0 tomoe). then tomoes came back and he manifested susanoo
But when they get there he still has tomoes, cause they flew there. I ask you what if the place sasuke was looking for was not shin's place, but rather the worse enemy that he talked about earlier in gaiden, and the searching happened before gaiden even took place. With his searching sasuke started gaiden in a weakened state, he loves to spam susanoo but he didn't when first encountering shin(when he was tomoeless). I'm just saying it wasn't shin army he was tracking cause he freaked when he saw sharingan, sasuke would know if the army he was tracking was packing sharingan like crazy. Bottom line sasuke said he searched kaygua's dimension in response to naruto questioning his weakened eye,
the one he started gaiden with, I think he needs tomoe to dimension hop and use susanoo, and was tired from tracking new big bad and was telling naruto without upsetting the kids