As adults that is often true, many adult BPs won't even use a hide in tubs.
However, your BP is still young and also has recently moved to a completely new world full of new surroundings, smells, outside activity, etc... your BP is still acclimating, searching for a safe spot with the temps he currently desires.
At least temporarily, I'd offer a second hide. Worst case, he doesn't use it, no harm done. Best case, he settles down and you've got peace of mind.