Its not a trend. They have been producing folders out of there for some time. Spyderco's Taichung models are the only ones I can give a pass to on being a non USA made knife and purchase one. They are that well made and put together. It has nothing to do with Walmart. Walmart sells crap, for low prices. They have a market there and I don't begrudge them one bit for it. If they didn't have a market for their business model, the market would force them to close. Same with Spyderco's business/manufacturing model. Do I wish I could get a Golden, CO blade that is as well made as the Taichung models? Yes I do. To say that Taichung models are following some kind of Walmart mentality is misguided. They don't sell or produce cheap junk out of that facility, they have earned a lot of respect and admiration from the knife community for the types of high quality product they consistently produce.
Anyone who has been around knives and knows the difference would immediately notice the higher level of fit/finish and consistency from that plant. The old adage applies, you get what you pay for. Well, most of the time