AB,
I put the word "sound" in quotation marks because it is based on RD's logic, not mine.
There's no such things RD's logic, or indeed anyone else's. Logic is logic - it stands or not on its merits, but no-one owns it.
People like Dawkins and the recently deceased Hitchens are examples of the modern trend towards aggressive atheism...
Presumably you have an example of his supposed aggressiveness you can share then? In my experience the approach of these people is marked generally by politeness, albeit that those who have their cherished faith beliefs challenged will often respond with false charges of aggressiveness, militancy etc for want of a counter-argument of their own.
... which not only promotes the idea of a Godless world...
It doesn't "promote" that at all; rather it just points out that that's where the logic leads.
...but openly attacks and tries to ridicule the faith of Christians.
Ridicule is fine when the opposing position
is ridiculous. You, presumably, would be relaxed about ridiculing my faith in the existence of pixies - and for the same reason.
This is harmful because it endangers the eternal salvation of those human souls who are taken in by it.
And that's called the fallacy of reification - just assuming that your (frankly bizarre) faith beliefs are facts, and making an assertion from that position. That's why sound logic is so important - no matter how much you drive a coach and four through it with statements like that, it undoes you nonetheless. Either engage with it or not, but just ignoring it and pitching your tent on the patch of unreason you prefer leaves the rest of us with no choice
but to point and laugh.