He has no excuse for not using preta path which replenishes chakra, and would easily fodderize bm Naruto. I honestly think so, because so far he's shown nothing but human path, maybe each eye contains like 3 separate paths or something.
No, he doesn't use Preta path because it would leave him open to attacks from the greatest taijutsu user in the series.
stop making excuses for him, in his dimension he could've absorbed naruto's rasengan and his BM cloak which would have actually given him chakra, his version is gimped imho
If he would of tried to absorb Naruto's Rasengan in his own dimension, it would force him to go tangible in the actual world. Then he would of got killed.