This is the problem with philosophers, they take concepts far to the extreme and off into absurdity.
Quantum uncertainty yields a probabilistic universe. Combining millions of probability curves still mimics the certainty of Classical Mechanics in the aggregate.
By Linde's reasoning this universe could not be said to exist without a conscious observer to see it. But let me take this one logical step further, a step that Linde and others fail to take.
This universe cannot be said to exist without
my personal observance. I, AZPaul3, am the center of the universe. Actually, the bridge of my nose is the center since no matter which direction I look the measure of distance as far out as it is possible to see is exactly the same. From the philosopher's own handbook, I cannot say the universe existed before I, personally, was here to observe it. Further, then, this universe will end with my end of observation upon my passing.
[aside]
For the younger members here, it is most unfortunate that life is a terminal condition to begin with and given my position on its path your existence may be cut rather short, though I endeavor to delay this ultimate end as long as possible.
[/aside]
The absurdity of this is that we have Linde's recording device where the information of others' observations of the universe's existence prior to my consciousness is preserved (all omphalism aside).
It appears, then, that my personal observation of the universe is not a necessary condition for its existence. By extension, this universe exists independent of my consciousness, or the consciousness of Linde or Wheeler or anyone else.
I submit that there is in fact a "recording device" where the information of the existence of the past universe is stored. It is in the shape, content and state of the present universe, all recorded by the physical laws from its past states. It requires a conscious intelligence to decipher and understand the record but it is there regardless of the existence of any specific, or all, consciousness.
The record exists independent of any intelligence advanced yet enough to decipher its code. The universe exists independent of any consciousness present to observe it.