Not a top 20 player with an avg serve...end of story.
Likely would not have ever got on tour to start with without that monster serve.
So what? We need different styles of players. Otherwise there will only be Nadal and Fed clones, and one way to do everything. Learn to enjoy variety and appreciate the level of tennis all these guys play, instead of putting on one pair of lenses to look at the world, just to push some argument through. It is getting tiring.