Loot Scaling

Does loot scale really hard as you level up? I'm level 40-something with PL and I'm getting a ton of tier 4/5/5+ gear from regular drops and boxes. I have like 20 5/5+ weapons, and I'm finding things like tier 5+ steel pipes laying around pretty regularly. It wasn't this way at lower levels, and it's definitely different from pre-2.0, where basically nothing was legendary.