Ancient
No argument with the tone of your post but just a nit
This was not a simple engine failure, the aircraft collided with a flock of heavy geese which implies a stong possibility of other damage. In the circumstances a desire to get back to terra firma ASAP is understandable.
I had also asked myself the same question but in the end I concluded that the crew's action was probably only based on their instruments, overt symptoms, and fidelity of their training
It was only during the investigation afterwards that larger birds than certified for or other damage was noted
I hold nothing as yet against the crew but I suspect that that airline is in for a rough time on future flights into European airports until they meet standards