God's ways are mysterious, as the author says, and I believe in abundance of love Gid even saves some pagans. But it's the Church's job to clarify the spiritual waters, not muddy them.
When Christians enable and celebrate paganism, what message does that send? What good does it do? He can say it does not obliterate the Logos, but then he goes on to extol God's extreme economia as if it's normative and good. If God saves pagans it's not because paganism is salvific, but because God sees them doing their best amidst the Church's failure to reach them.
If we spent as much effort baptizing people as we spend on fostering "understanding," the world would be a better place.