You have found some good quotes confirming the Church's teaching on the unanimous consent of theologians, and they clearly disprove Ladi. As you are discovering, he refuses not only the most clearly written proof such as you provided, but ALL proof, if it threatens his position in the least. He would also fight you to the death arguing the sky is not blue. That's just what he does and you have to take it with a grain of salt.
Obviously we are all trying to be faithful to Jesus Christ, I think we need to remember that and not impugn bad will to others too quickly. But constant ad hominem attacks certainly do no good and destroy charity.
Seriously, the issues I discuss have no bearing on persons or their integrity, I just want to have clear discussions with others that aid in me personally clarifying the faith to myself and can only hope that the process is being mirrored in the other person to their benefit.
One thing I don't respect in others is the unwillingness to see what is placed before your eyes, and this is all around, not directed to any individual:
"Hey this is interesting, look what was taught before Vatican II!"
"That wasn't taught."
"Uh, its in 5 theology manuals by Pohle, Tanqueray, Spinoza, Etc. Sure it was."
"No, that's an invention."
"...ok... that's not what every priest and bishop in the world said in 1930."
"Doesn't matter."
"Right..."
How can I take that seriously?