In 2013 I ordered a mix of socks, tees and underwear that cost $450 USD, not cheap but the point was to get good quality and better comfort then the other brand names. Fast forward to today and the Tees are still in perfect condition but most of the socks and half the underwear died in the past year. That's 8-9 years of everyday wear and the shape and fit never changed.
As my aging inventory was dwindling, I reordered a similar package expecting the same results but something changed and everything I had loved about the MW underwear was gone. The fit is awkward and unsupportive, material is paper thin and fades after 5 washes and the waist bands fell apart on several pairs after a few months.
I'll assume they sacrificed quality for profits, why else would you fix something that isn't broken.