What was the rush? Saving a few dollars?
Dual hydraulic failure in the A320 is 'LAND ASAP (red)'.
Nobody is saying they should have rushed - you shouldn't, working through the ECAM, QRH summary and all the other associated drills resulting from it (gravity gear extension, briefing what might be a very non-standard go-around etc) is a long and complex procedure - but a red LAND ASAP is not to be taken with a pinch of salt. You can't blame people for questioning why it took them a few hours to get down.
Airbus test pilots might have landed in mechanical backup, but would your average line pilot be able to do it, perhaps never having seen it before even in the sim? I'd hazard a guess at probably not.