He has his Natan aka-Finzeig. His Natan (& Aryehs) are the only one that know he's mashiach, besides of course the new Mashiach himself.
This new Mashiach beleives and says the whole world's Talmedei Chachomim are like כקליפת השום in comparison to him.
Rav Eliyashev, Reb Elya among many others with their Daas Torah,saw right through him.
Mashiachas come and go.