>> Protestantism ought to give way to Reformational catholicism. Like a Protestant, ... he insists that salvation is a sheer gift of God received by faith and confesses that all tradition must be judged by Scripture, <<
On these two points, he would also find himself in accord with Catholicism. Catholics reject sola fide, in part, because faith comes from grace, and necessarily accompanies works; Catholics reject semipelagianism that holds otherwise. Catholics also judge all tradition against scripture; the distinction with Protestants is that they interpret scripture in the light of tradition, as opposed to, as this author justly condemns, a soteriology that presumes that if the Catholics believe it, it must be wrong.
These are typical RC canarda, as Reformers clearly taught that faith comes from grace and necessarily accompanies works. That while faith appropriates justification for the unGodly, if effects obedience as a result.
Nor do Catholics also really judge all tradition against scripture, rather Rome is held as the supreme infallible judge of what both consist of and mean, and thus tradition neither needs actual proof from Scripture, but it sees no contradiction btwn traditions such as the sinlessness of Mary and her purgatory, which even the Orthodox reject as being not of tradition.
Nor do evangelicals interpret scripture in the light of tradition, but vice versa.