Good or no?

That is correct - the EBOM template even provides a compliance path specifically for buildings constructed in 1993 and beyond. That being said, in my experience, however, its not uncommon to find higher-flow fixtures even in buildings built in the 1990s. And two important exceptions that remain commonplace are faucets and showerheads - the 2.2gpm faucet remains far more common than 0.5 gpm faucets, and showerheads are all over the map these days. But the answer to your question is yes - the prereq can be earned automatically. The expectation for the plan is indeed implementation, and I would caution the notion that other policies simply need to be written rather than implemented. For all prerequisite policies, LEED expects full implementation to the extent feasible. That doesn't necessarily mean a specific performance goal would be achieved, but it goes well beyond simply writing a plan and handing it over.