NO ,there was no incompetence on the part of the Irish Garda, but there was only one person available to carryout the autopsy,Dr Harbison, and he was very long in getting to the scene of the crime.
as far as I know Bailey has offered DNA samples, AND THEY HAVENT MATCHED.
But there is another point of importance here;that is that someone should not be extradited, to a different criminal jurisdiction, just because it is easier to convict someone, under a system whereby the accused has to prove his innocence rather than the prosecution having to prove guilt .
It beggars the question why, and the answer appears to me to be that the Du Plantier family have considerable political clout in France, ANOTHER CASE OF WHO YOU KNOW and how well you are connected.
the same sort of effort would not be used if the murdered person was a homeless tramp