Most/all law firms have templates they hold internally and modify slightly for their clients. Very few billable hours are going into handing you your standard agreements like NDAs, offer letters, CIIAA, and so on. Your lawyers are really there to help you when things go non-standard, which is inevitably going to happen with any non-trivial business.
I evaluated Atrium out of curiosity when I was looking for a law firm for incorporation purposes. I filtered them out after the first call because they weren’t set up to handle the slightly unusual setup I had, which other law firms had no trouble with.