>This is a very reasonable drawing of a bicycle

Reasonable? Sure. Great? Absolutely not.

Let's not move the goal posts here.

> and forward swept front fork, which is an important detail for actually being able to steer the bike.

...but no crown or any sort of indication that the fork is separate from the frame, making it impossible to steer. Yay.

> the drivetrain is single speed, but that's fine, and the wheels are radially laced, which is also fine: both of those simplified details are things which occur in real bicycles.

Sure! Now do the bicycle saddle.