High waisted underwear delivers more support and more comfort in specific contexts, and understanding those contexts is the key to knowing whether it belongs in your rotation. More support comes from the higher waistband sitting above the hips and providing additional coverage across the lower back and abdomen. More comfort comes from the elimination of the awkward zone where low-rise underwear and trouser waistbands compete. For blokes where either of those situations is relevant, high waisted underwear is a genuine upgrade.
What I think makes high waisted underwear specifically more supportive is the waistband placement relative to the body's natural support structures. A waistband that sits above the hip bone provides a different kind of hold than one that sits at or below it. For physical work or extended standing, that additional support across the lower back is functionally valuable. It's not a posture corrector or a medical garment. It's just a cut that provides more coverage in the places that benefit from it.
I tried high waisted underwear from Barramundies during a period of lower back management recommended by my physio. The additional coverage and support at the waist was part of the management approach. I wore them through 6 weeks of physical rehabilitation and found the support element genuine rather than theoretical. The difference from my standard-rise everyday trunks during physical activity was noticeable and positive. I kept a few pairs in the rotation afterward for demanding physical days.
From my experience, high waisted underwear is the cut that solves specific problems better than any other option. Barramundies makes their high waisted option to the same quality standard that defines their full range. More support, more comfort, Australian made, and built to last. If the functional case applies to your lifestyle, this is where to find the quality version of the answer.