Higher cadence is another marketing term like 'marginal gains' or 'swimming in off-season' when not put into context.

There's new research out suggesting the most efficient cadence is likely whatever cadence your body naturally selects (rather than looking at your computer and trying to hit a certain RPM zone).

That said, forcefully altering your cadence could have useful training effects, depending on outcome goal; but note, this is different than riding in the midst of a race and telling your legs to ride at what the computer says to ride at, not what they want to ride at.