So suppose all intelligent life in the universe vanished. Would books still be meaningful? Would art? How would brushstrokes of paint on canvas embody meaning?
We've covered this ground before in the "world of the simulation" discussions. I'm in the camp that a simulation of a tornado is meaningless without someone to give it meaning. Without someone to observe it, it's just pixels flashing on and off.
When I try to construct it that way, I run into trouble. In essence, it means that the thing (or event), "gets" meaning based on a particular type of context, so that without someone to appreciate it, no meaning is possible - the context is then a system with the thing + observer. But to me, that's just a larger system, and things haven't improved.
It's easier to see what I mean by working backwards. The tornado has meaning when I see it coming because I observe it. But I don't really observe it in any detail. I can't see the air pressure, individual molecules, the back side and so on. The majority of the tornado is invisible to me. And yet, without all these unobserved things, there wouldn't be any tornado or "meaning."
I think the mistake is in allowing the word only to apply to systems that include observers. Plainly, the long history of life on earth has meaning, even meaning to me right now - without it, I wouldn't be here. Yet, much/most of that cannot be observed. We may never know what the first lifeform was like, yet I believe there was such a thing and I think it matters a great deal.
And for a final example, I do not know what the ramifications of what I do today will be. Still, I think my choices will have meaning, perhaps exciting new meaning, in the future. In this case, I am observing, but the final meaning hasn't yet been created.