I've been wearing a variation of the Modern t-shirt since the 90s…it wasn't even called modern at that point. Im the last couple years, the cut and quality of fabric has changed. The fabric while initially soft and visually appealing, pills much more quickly with just normal wear and it is overall, ...thinner. While the fabric composition has been the same for several years, there is a quality difference in those fibers. If you are GenZ or a young millennial, you may not realize this and think this stuff is great, but for anyone older, it's a bit of a bummer. The reality is, everything has gone down in quality, and one has to find a balance between affordable price and quality expectations. But, I'm not quite sure if Gap is really that much better than Old Navy is certain things. Today's Gap is probably close to ON quality from 5-10 years ago. My daughter has a pair of jeans from Gap that are less than 2-3 year old and already has holes where the pockets were sewn to the backside. And, these where not lightweight cotton. So, buy the shirts, they certainly aren't trash. But buy them on sale, wash on cold, dry lightly on low, and then hang to dry. And be prepared to deal with pilling!