I checked MSE, and found two posts related to this issue, from which:
If someone leaves an identical answer on an old question (for some arbitrary definition of "old"), cast a deletion vote or flag with a custom explanation, and ask for deletion. (link)
Every additional answer adds noise.
The presence of many similar answers essentially all saying the same thing makes it harder for later answers that may contribute something new to be spotted. (link)
Given those points:
Looks OK is valid on the technicality of considering the post in isolation, but it should not be considered in isolation, as such answers do add noise and are no-effort. But how would the reviewer know if they didn't check the whole post?
Update: the new review UI now allows viewing the other answers from the same review window.
Therefore, if noted in a comment, as Federico ♦ has done for the given example, and as I and others have done in the past, IMO the review should be Delete / Recommend deletion. (Note: such posts go into the queue after one or more low-quality flags.)