That seems something strange for a presup to say. BTW, if you look at page 86, Vos addresses your concerns to some degree. The preceding chapter deals with them in more detail. If I am not mistaken, you did. The burden of proof seems to be resting in your general direction.
Any fool can quote and any fool can quote a quote.
It is generally good scholarship to directly cite primary sources rather than lift citations from secondary sources. It is also good scholarship when dealing with an individual author who has a vast amount of literature to not construct an entire area of their thought on one citation. I can easily turn the argument back on you. BTW, i found a nice passage in the Summa Theol. And oddly enough Thomas gives some of the arguments you give.