For me, it's related to the percieved value and accessibility of the bloard, namely if it can be easily replaced for a reasonable price.
There are three types of decks that will be forever reserved for my wall or a future possible sale if things get rough: (i) autographed decks, (ii) decks that are out of print/otherwise definitely somewhat the last of its kind, either due to the rider passing away or switching companies/retiring, and (iii) decks that are one-offs or had limited runs.
Everything else laying around in my vault is pretty disposable and is just a wall bloard until I decide to skate it or it subsequently legitimately meets the above-referenced conditions to be designated as a historical wall bloard.
Just my two cents. Idk Pablo or his personality (never met the man) but I go to sleep under my wall of bloards imagining that all the riders I have wall bloards for are as neurotic and stricken with ocd as I am and would desperately beg me to preserve their precious bloard lest it go extinct in the outside world and I become the only person holding this unique piece of their contribution to skateboarding history.
But who really cares, no big deal, I guess, ride the bloard, whatever...