where is
Hashirama
Madara
Orochimaru
Minato
Sasuke
Itachi
Danzo
and finally Naruto
Wtf... Kakashi can't beat Current Naruto same with Masked Man Obito can't beat Current Naruto
Kamui works creating space barrier around target slowing down him until Kakashi opens black hole to another dimenssion, while that could caught BM NARUTO because he lacks SUPPERIOR REACTION TIME AND SUPREME SENSING SKILLS. Kakashi even using Kamui as first move can't catch BSM Naruto, who:
1) will sense chakra building up in Kakashi's eye
2) Can react really very fast almost instant
3) Can move with flash speed blinding Kakashi
4) Can uses Kurama arms/chakra arms to cover Kakashi's vision forcing him to waste it on chakra arms heading towards him
BSM Naruto make him almost impossible to beat with something like Kamui... as Naruto can not only sense attack and make preparation as well as react instant but also utilize his flash speed which blind everyone and sharingan isn't capable of tracking Naruto's moves at such speed.
BSM Naruto > Hypothetical Kakashi
try harder
PS. Also if you are going argue using these manga panels:
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Then I can easily counter with this panel:
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^^ Naruto was attempting to add Senjutsu to his tailed beast bomb
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^^Then even tried to combine it with Minato's Tailed beast bomb and we know that TBB requires a lot of focus , that why Naruto was even caught by The God tree. This and also because God Tree emerged very close to Naruto and Minato who were unable to move. The reason why Minato was able to escape is Hirashin and due to Edo Tensei so his chakra's woudn't be drained completly.