The Nintendo DS browser was not good enough to use as a daily driver. My phone, on the other hand, I spend more time browsing on that than I do my computer. Some sites aren't great on it, but the vast majority are fine (reader mode will get you through 99% of the rest). I'd argue most sites don't "look good" on any device. It's really not that hard these days to make a site work on mobile, the navbar often is the most challenging part of it.