Sensible modern democracies will have those features, but they're no more part of the definition than having seatbelts and airbags is part of the definition of what a car is (I guess the model t is the equivalent of ancient Athens here?).
I‘m not concerned with the definition of democracy, if it can even be defined. I‘m simply concerned with the modern concept of democracy, which includes stuff like civil liberties, minority rights, and—relevant here—protection of these rights from tyranny.
I don’t think our analogy is valid. A car is just a car, and the concept of a car has not changed since its invention. The modern democracy has been constantly evolving from its inception (I’m sure democratic societies existed even before ancient Athens), but nobody would consider a democracy from the 1800s a democracy if it existed today. Heck even USA would not pass until the civil rights era of the 1960s.