However, there were few speculations that Nagayasu had carried out fraud, and that it was probably a conspiracy by the Masanobu HONDA and his son Masazumi HONDA, who were trying to regain their power in the bakufu.
しかし長安が不正蓄財を行っていたという見解はほとんどなく、これは近年では、幕府内における権勢を盛り返そうと図っていた本多正信・本多正純父子の陰謀とも言われている。