I don't think Sikorsky f'upped as bad as you, or Topshee, think.
Everybody is complicit: GDMS-C, Sikorsky, the project office (PMO), 12 Wing, RCAF, RCN... the only one that seems to be doing their job without drama is L3-MAS. I would say who I think is most at fault, but it's irrelevant at this...