I've only got ~200 hours, all from last wipe and I've only really "learned" about 3 maps. Woods, Interchange, and Customs. Dabbled on Factory, not sure if I've been on Reserve or Shoreline. I'll branch out this wipe I imagine, but compared to nearly every other game I play, I suck. Not like, I'm worse than normal, I'm just not "good". I'm sure there's 10,000 people like me who extract one out of three raids as PMC and win like 50% of gunfights.
Definitely a learning curve game, but that's what makes it fun. Until you watch the leveled up pros like Landmark or Grimmmz or Summits or Pestily of course who just throw on whatever gun and ammo and shred through everyone while blasting full speed giving 0 fucks about how much noise they make.