The concept of soulmates is antimale

Soulmates = wait until you find the perfect partner

Men need to fuck, as soon as possible. The concept of soulmates is designed to make men and women believe that they ought to wait and it's toxic to say the least.

Secondly it implies that partners cant or wont change. This is especially toxic for males because it's our job to correct flaws and change a woman aka. lead her.