But those guys couldn't have done a CAT A (PC1) profile since they didn't have the clear area ahead nor a cleared helipad environment - and, unless I am mistaken, since they were operating as a private helicopter, they weren't obliged to do so either.
As it happens, 10 degrees nose down and full power (if they had held it until V1 and rotated) would have probably been safer than what they actually did.