I can only see the introduction, but it already shows some confused thinking.
Whether something exists, and whether you call it X only because there are humans who call it X, those are two different things. On a planet without humans, stones exists, but no one is there to call them "stones". So they don't really exist, is that what the article is trying to tell me?
Also, the stones do not exist, because only atoms exist, mwa-ha-ha-ha! Or maybe just someone equivocates "exists" and "is not made of smaller components".
The example with red color, again confuses "this object reflects red light" with "there is an eye that perceives the reflected red light". Also, good point that things can't reflect red light if they are in complete darkness.
Does anything of the above have anything in common with quantum physics?
Would adding quantum physics to this confused thinking make it any more meaningful?