He can enter people's minds with tsukyomi as he did with that random guy from the Cloud when they questioned him about Bee's whereabouts. It's just genjutsu.
He couldn't read his mind, he did the EXACT same thing he did with zetsu. The Guy from the cloud was forced to SPEAK verbally and give away the wearabouts about Bee. It's Genjutsu, but not your so called claim for it to be tsukuyomi.