they have had engine fail before V1 and despite of that they took off??
Well they possibly made a very good decision then.
V1 is the speed at which the first stopping action must be taken in an RTO... (it most certainly is NOT a decision speed)...
...so, if the failure occurred at 1-2 knots prior to V1 (depending on what certification standards you're dealing with) and there was not enough time to assess the damage then the correct decision was made. No?
Of course none of us know exactly what the circumstances are, so unless we're big-league quarterbacks with monday-morning ball practice let's just refrain from Kangaroo-courting our colleagues and show some respect?
MGC