Goku has employed some ingenious strategies throughout Dragon Ball's history. These were some of the most clever.

Yakon believes he holds the advantage in the dark, but Goku's ability to sense ki means he can easily avoid the monster's ...

Typically, this isn't a matter of conserving energy, as Super Saiyan Blue gives him total mastery over his ki control ... into a false sense of security. For all the times Goku uses Super Saiyan ...

This just makes a lot of sense for Goku’s legacy within the Dragon Ball world overall. While Goku has saved the world on many different occasions over the decades, these fights really aren’t ...

So arguably, this would place it in the same range. Thus when Goku and Vegeta train to use that instead, it would make sense to avoid a less refined version of that power seen in this form.