Not at all he peaked at the beginning of Part II.
And what did you expect? He lost his Bijuu. He got played by Deidara because half of his attention was focused on protecting the village and the other half fighting another long range S Class Ninja. Also he was nerfed, self imposed, but still nerfed.
Every other Jin went beast mode when they fought their Akatsuki member except Gaara. He had to protect the village and didn’t want to loose control and risk killing his people . Had they been in a barren desert I don’t think Deidara would have won (also Deidara’s fault because he didn’t bring enough clay)
Despite all that he still managed to contend with several previous Kage, helped stopped Madara from completely murdering everyone in the SA, aiding in stopping the 1st Meteor drop, went up against the Juubi, Helped the Bijuu in their fight against blind Madara.
What the hell are you guys expecting of him without his Bijuu? He still is Kage level. Stop comparing his power to the likes of god tier and he literally can take on half the NV on his own in any given battle. SMH :kk: