He didn't make an effective statement. You couldn't read the names on the dress. Then it was a butt ugly dress, which further dragged his attempt at a statement down. That cut out in the front was probably an attempt to make it "fashion foward" (whatever that means) but it ended up looking like he ran short of the ruffle fabric. How long is he going to skate by? Either of the other two men with him in the bottom have produced better dresses this season than Sergio. They should have stayed.
I was happy with a win by either Dayoung or Chelsey. Both did a great job of meeting the goal of the challenge and in doing something interesting and personal. Chelsey's letter jacket coat was fun and young and would have a strong niche audience. It reminded me of Beyonce's salute to HBCU's at Coachella in 2018. Classic made hip. Dayoung's jacket was gorgeous, both in her choice of fabric and in the design and fit. It will have a strong audience, too. I'd buy that and wear the heck out of it. Over a dress. Over skinny black pants. Heck, over a pair of jeans. I'd live in that jacket. I see the letter jacket coat is for sale today $385. A bit expensive maybe? I hope Dayoung's jacket is the fan favorite and it up for sale, too. I wouldn't pay that much, though.
No, the jacket isn't derived from a religious or otherwise sacred design. Nothing about it insults or degrades the culture from which it comes. The wearer wouldn't be trying to pretend to be Korean.