For simple reaction coordinates, such as functions of bond distances or generalized coordination numbers, corrections to the bare force are insignificant and the approximation ⟨fs(ξ′)⟩ξ′ ≈ ⟨λ⟩ξ′ is generally invoked. The reaction mechanism of oxygen evolution reaction (OER) on metal catalysts remains a subject of debate within the electrocatalysis community. The Volmer-Tafel pathway, which involves a proton-coupled electron transfer (PCET) adsorption step followed by a chemical recombination of two adsorbed hydrogen intermediates, is one proposed mechanism. However, a conclusive determination of its dominance over other potential pathways remains elusive.