i dont love it, i dont love or hate anything in video games, i just see their aspects and how they improve gameplay, i dont particualrly choose that perk because i see it as pointless, but i do apreciate the variant it puts in the game, and how one haves to change strategy accordingly with each perk given, i just see it as another aspect to look out in a fast paced game where you usually are running from place to place (or camping in one spot)
and i dont think anything is noobish in any game, everything haves it´s counter mesure and there is always a way to beat someone, i would think that is the point of the game, if martyr anoys you that much well, think of a way to counter it, it´s just another variant that you have to take into account, being anoyed by it just show how much of a success the grenade haves had with you, once you get the timing on killing and running to avoid the grenade you will probably stop being so anoyed by it.