They've likely hit 32 and found it pointless to log in since there's nothing left to offer. I play on both Xbox one and ps4 and as of last night for all classes to 32 between them all and have no reason to play anymore. Open world exploration with real world PvP like Warcraft used to offer before pvp gear killed it instead of crucible would be good but then I have Planetside2 for that and guildwars 2. It's a real shame because I love destiny.