It's the same issue as pvp. Bounties. In the same way that regular and especially exotic bounties fill the crucible with pve guys who don't want to be there, strikes get loaded with pvp guys who are only there for vanguard marks or bounties and not because they have any interest in doing the same 5 strikes over and over. I'm guilty of this myself :(sorry)The only time I've ever done any strikes was the 25 required for Bad Juju and it turned out that weapon is absolute garbage in the crucible anyway.