This is not a route to take. It’s also wrong since there is a lack of math to use against what your starting with. Only what he thinks you end up with. It’s an open statement and dumb to make. Very misleading.
Totally inaccurate. Outright wrong.
What you can do is use the tire diameter and gear ratio to mathematically figure out the finish line rpm. That should end up being at max hp/rpm or slightly higher, which would be better.