I'm a Support Engineer at GitLab, and based on my own experience that statement is definitely correct. There's entire classes of problems you simply don't have to deal with at all for SaaS customers.
Come to think of it, I would have though GitLab's fully-distributed workforce would make this true for you, too, since "I dunno what this error means, lemme just walk over to Jane's desk and ask" becomes expensive in that setup