Corsec has the right to criticise and air his views on whether he thinks its right and wrong, thats his right its supposedly what our Grandfathers, Grandmothers and relatives fought for in WW2 plus the wars that came after. You don't have to agree with him.
I can't see the point of building a replica when you can find one on the seabed, if you had to build another Do 17 it would cost far in access off £300000 if you had to pay the full price up front without volunteer helpers. Whether what comes up from the seabed is worth £300000 only time will tell, the museum certainly won't say that it is junk they will ask for more money to help with the restoration.