The time for me to fully weigh in on Traditionis Custodes is nearly at hand. That said, the purpose of this posting is to address only the accusation made at the link above. I read the thread and it was more conspiratorial trad outrage porn. However, for the purpose of this posting, let us assume that the claim is true.
If Pope Francis did ignore a report favourable to the Tridentine liturgical form to publish Traditionis Custodes, it would be no different than Pope Benedict XVI ignoring the bishops of the world episcopate in issuing Summorum Pontificum back in 2007. Or Pope John Paul II twice ignoring the world episcopate in issuing Quattuor Abhinc Annos in 1984 and Ecclesia Dei Adflicta in 1988.
Yet the same people getting their undies in a wedge about Pope Francis supposedly ignoring a favourable trad survey to rule against them were not similarly outraged by Pope John Paul II (twice) and Pope Benedict XVI (once) ignoring unfavourable episcopal feedback to issue rulings trads liked. You cannot have it both ways without being a flaming hypocrite.
So even if Pope Francis went against episcopal consensus in issuing Traditionis Custodes, so did Pope Benedict XVI and Pope John Paul II with their indults of 1984, 1988, and 2007 respectively. And need I mention that Pope Paul VI ignored a nearly unanimous consensus on his Birth Control Commission to side with the 4 commission dissenters in issuing Humanae Vitae? I do not hear conservatives so outraged about that. Or that Pope Leo XIII's commission examining the validity of Anglican orders was split but mostly favouring validity but the Archbishop of Westminster persuaded the Pope to rule in Apostolicae Curae that they were invalid lest a favourable ruling undermine Catholic efforts amongst the Anglicans. I do not hear anyone on the right getting their knockers in a twist over that.
The bottom line is this: the Pope can consult with whomever he wants but he is not required to follow the advice given if he does not want to. Irrespective of what individuals may think about the issues involved, that is his prerogative as Supreme Pontiff.