This is from the article cited in the OP
Online commentators have also speculated that the bottom of the pool may have been affected by the presence of heavy equipment and trucks and a presidential motorcade that drove through at one point shortly after the coating was applied.
Ravi Kurani, President of Standard Water Corp, an industrial technology company, told CNN he would never recommend driving cars out onto a pool surface, especially when renovations are being done.
Its like youre putting flooring on your kitchen floor and then youre take a really heavy tractor on top of it its going to mess it up a little bit.
Tim Auerhahn, a pool infrastructure expert and the chairman of the Aquatic Council, a consulting firm , said over email there isnt enough information to definitively conclude that the vehicle traffic caused damage, but it is one of several factors that should be considered as part of a comprehensive failure analysis.
Auerhahn added that, Its important not to focus on a single theory too early.