Yes Jim.
A genuine expert on Irish history who found the the history in Coogans book was a "travesty."

You linked to two reviews.
The Indy one was by a non-historian who would not have known that what he was reading was inaccurate. Wrong.

The other review said nothing about the book apart from its sales.
8000 copies.
Hardly "a best seller" as you claimed Jim and certainly not claimed as such by the reviewer!
"One thing that is clear from the Nielsen figures for 2015 is that the ­enthusiasm of Irish publishers in bringing out so many 1916-related books was not matched by ­interest among the book-buying public. ­Despite the huge success of Joe Duffy's book, in general the sales of 1916-­related books have been disappointing."