Q. Can any highclass soul claim that he is sufficiently pure to skip or give up Nitai and approach Gaur-Radhey-Shyam directly?
Shrila Narrotam das Thakur, who needs no introduction, says that He is the eternal servant of Nitai and His Lotus Feet are the eternal truth. He begs Nitai to always keep Him close to His Lotus Feet.
Shrila Narrotam das Thakur has already given the best answer to your question dear mataji:
“ahańkāre matta hoiyā, nitāipada pāsariyā asatyere satya kori māni”
Such a socalled high class devotee who gives up the Lotus Feet of Nitai is simply puffed up and considers his mental speculation and imagination as advancement in Bhakti. (asatyere satya kori mani) His advancement in Bhakti is asatya but he still considers it satya.
If you will defend Nitai’s exclusive bhajan then Nitai will defend you exclusively from Maya.
Joy निताइ !