I disagree. He didn't fail at trying; he just didn't succeed before the GPWS did.
Whether or not he should have initiated a go-around is subject to debate. It is a serious step to take when the Captain was allegedly the handling pilot, and was probably warranted in this case. However, I can't blame him for being reticent, at least to the point of the GPWS alarm or missed approach altitude, as long as the airplane was otherwise stable.
Wow, if it had been a co-pilot from the third world, there would have been deafening condemnation. Hypocrites you guys, aren't you? There would have been clarion calls for both pilots to be summarily sacked. Sheesh, what double standards!