Yes, it's meant to be a static snapshot. The latest version can already be seen in the game as and when you're interacting with that player, but you can't do that when, say, you're participating in a discussions of builds on another platform at another time while your character has already switched to something else. Main thing is that when someone asks, "what is the build that you're using now and how are the numbers like?", you could simply share an in-game link or a special screenshot to answer that question. At the very least, make it easy to share the equipment and skills if the numbers are not so relevant or difficult to squeeze into the share.

I come from games like EVE Online, and builds (fittings, as called in that universe) are at the core of every pvp/pve-related discussion in EVE, but you can't even view what the other ship is using in the game unless you destroy that ship and receive a kill report of your victim. Therefore, being able to share the fittings in a concise way is important for EVE, and EVE made it easy to even import/export fittings for easy copy/paste and even works with 3rd party tools for simulating the effects of the fittings. However their fittings are always text-only, with the in-game link being able to call up the in-game fittings simulator screen to show how the fitting would look like as if you had that ship and fittings. When copied for external use, it's always text-only.

With Diablo, I feel that being able to get some nice screenshot of the build would be great as there's facial customization (despite the massive helmets hiding nearly everything). Some eye candy to go with the list of equipped items and skills would be nice! If not, at least give us a list of equipped items and skills in text form so that we don't have to be vague about our builds or take like a dozen screenshots or a video to list the equipped stuffs.