I don't think manufacturers fully considered the implication of selling pinball to consumers when it comes to the tech skills, the service and maintenance coverage when you sell nationwide.
That being said, my first issues were tedious to fix as I didn't know what I was doing, but in time it's becoming an additional skill and an actual part of the fun of owning pinballs. There's something very rewarding in fixing your own machines. In the end I don't think fixing is that hard, it just has a learning curve, but starting somewhere is the best way to get there.
With the support we get from fellow pinsiders or from people like Lloyd, and the fairly consistent point of failures for the games, I'm not worried anymore when I need to lift the playfield and figure something out.