Indeed, whatever is not observed has as much significance as whatever is observed. And, truly, the observation - or ommission - is causal to what happens next and thus contributes to the unfolding of reality.
Lanza's speculations are very useful to us in our research of God and the Observer Problem - but I still hesitate on quoting him directly because his speculations are often applied to the extreme which would lead to the "reality is illusion" deadend.
We'll have to label him with a "handle with care" tag!!! LOL! But then again, people often take Bohr to extremes, and declare him to be an "Eastern thinker." I think Bohr would be surprised by this, were he still around to hear of it.
Thanks so much for writing, my dearest sister in Christ!