Not just Takeda. All thinly ground san mai (including Carters) will bend in your fingers if you apply enough pressure. If you don't believe me, try it at your own risk. Thicker san mai blades will bend too, but you will need to apply more force.
What will not bend is when cladding is comparable to core steel. Devin AEB-L san mai is essentially AEB-L throughout, same hardness after heat treating.