Pixel art (and pixel-based graphics) may be obsolete in the sense that you no longer need to work within the constraints of large pixels making up an image.
But content creation is still not vector based in many scenarios. And even if vector-based graphics would be the universal standard, pixel art could still be used as an art style or for a retro look or to invoke nostalgia.
pixels, and their limited colors where the result of limited technology,
As technology has advanced past those limits, pixels are now an aesthetic used to create art.
Much the same way plastic and metal models don't make origami obsolete, these things have their place.
If they are obsolete, pixels can still be represented as rectangles in your scalable format for aesthetic reasons. What's your point? Aren't quests obsolete too?
Pixel art (and pixel-based graphics) may be obsolete in the sense that you no longer need to work within the constraints of large pixels making up an image.
But content creation is still not vector based in many scenarios. And even if vector-based graphics would be the universal standard, pixel art could still be used as an art style or for a retro look or to invoke nostalgia.