This highlights the problem with OEM SOP. Airbus has to make a one size fits all SOP, but we know that can’t be ideal for everyone.
The obvious fix is to have each company tailor the SOP to meet its specific operational requirements. The problem with that is that every new training manager thinks his technique is an operational requirement, and we wind up in a situation like my company has, where our SOP bears no resemblance to the manufacturer’s.