The grind to get attachments is bad for certain. All attachments should be unlocked by level 20, maybe level 30, with remaining levels only unlocking cosmetics.
The fact they killed the XP farms, but DIDN'T rollback XP gained from the farms is proof they don't actually care about the unlock progression so much as forcing people to stick around. If it was for actual gameplay reasons to disable bot farms, IE getting the good attachments too easy was a problem, then they should have done a rollback. Since they didn't, it's evidence that all they really care about is making sure people are stuck in the game for longer and the attachments don't matter.
