Hey Ward, thanks for your message. I would agree with you in most part if we did a real application (including naming and maybe overusage), but the purpose of the article is to explain and showcase the usecases, how far and deep you can go abstracting and preserving SOLID and I think it succeeds it when it coming to be one of the most complete and explanatory usecase articles out there. We could make a section maybe called "real life balance", to that I agree and I might add it soon.