Yeah reserve players that have been, and would continue to be, in the first team because of an already massive injury list. I'm sure if Liverpool had 11 first teamers out and then two players such as Insua and Zhar got injured it would make a story.
Its not really a good point as like dee said the teams down to using reserves in the XI never mind on the bench, so to lose 2 of the more first team ready reserves is a bit of a blow