Okay...let's see where we're at !
Firstly, those advocating an "independent reality" do nor require
any observer to evoke it whether they are language users or otherwise. This point stands irrespective of whether we have access to such a "reality" or otherwise.
Then we have those who claim that "thought" including "thought about reality" is predicated on language, in which case concepts of "independence" or otherwise require language as axiomatic.
And thirdly, we have those who argue that "language" is merely another form of "behavior" and that
all behavior is instrumental in
bringing forth a reality specific (i.e non-independent) to a living organism. This third point implies that "reality" is species-,culture-,and person specific.
I suggest all points to be made fall under one of these three categories.