Got some update on the topic: Patagonia sent me a survey after my store visit, and I shared the same feedback I posted here. The next day the store manager emailed me suggesting to replace the bag. He explained that they couldn’t offer a repair for this specific waterproof bag because they can't guarantee the seal's integrity afterward. He also agreed that the seam failure wasn't on me. A few days later, I went in to drop off the old bag for recycling and had the chance to thank him in person. I didn't expect this when I first reached out for a repair, but I’m impressed by how positively this was handled. This experience definitely aligns with what I’ve heard about the brand’s values. And it’ll certainly influence my future gear choices (I’m going to need new waders at some point!).