If you wanna get all accurate about it, many of these objects never actually existed as pictured. Since they are likely very large, the period of time it takes for the image to get here would be different for various parts of the image. In other words, pixel A could be seconds, minutes, days or more older than pixel B.
Excellent and intelligent point. Our own Milky Way, for example, as I’m sure you know, is roughly 100,000 light years across.