∀ {J : Type u_3} [inst : CategoryTheory.Category.{u_2, u_3} J] (F : CategoryTheory.Functor J AddCommGrpCat)
  (this : Small.{u_1, max u_1 u_3} ↑(F.comp (CategoryTheory.forget AddCommGrpCat)).sections)
  (s : CategoryTheory.Limits.Cone F),
  EquivLike.coe
      (equivShrink
        ↑((F.comp
                  ((CategoryTheory.forget₂ AddCommGrpCat AddGrpCat).comp
                    (CategoryTheory.forget₂ AddGrpCat AddMonCat))).comp
              (CategoryTheory.forget AddMonCat)).sections)
      ⟨fun j =>
        ((CategoryTheory.forget AddMonCat).mapCone
                (((CategoryTheory.forget₂ AddCommGrpCat AddGrpCat).comp
                      (CategoryTheory.forget₂ AddGrpCat AddMonCat)).mapCone
                  s)).π.app
          j 0,
        ⋯⟩ =
    0