This mostly seems to be a complaint about e-bikes and batteries. Almost all major manufacturers are still making mostly user-repairable bikes for recreational riding and commuting.
From nearly a decade of bike industry experience, I can say that most people should not be doing their own repairs, or should at least have someone check their work. Lack of experience, shoddy mechanical aptitude, and poor attention to detail can all add up quickly to missing teeth and broken bones, or worse.