Because Omnipotent Sqeegee is already infinitely powerful, it is impossible for him to get stronger. However, if he absorbs Dark Angel Weegee, he will become an overpowered form of Squidward rather than Sqeegee, who is even more powerful than this form in the sense that he has complete control over reality, with the ability to create whatever he wants at will. While Omnipotent Sqeegee has near complete control over reality, he still lacks the ability to create, unlike the form he reaches once he absorbs Weegee.