Technically, 1 and 0 only represent the states of powered and unpowered (yes, it’s more complicated than that - shut up). While “true” is usually represented as a powered state, that’s only because of tradition - or more accurately, because we decided to label it that way. In the strictest sense, true only equals true, 1 only equals 1, and a transistor with a positive charge is simply that - a charge. Binary is just one way of representing these states, but so are hexadecimal, decimal, and even strings. It’s all a matter of convenience and convention - and those conventions don’t always follow strict logical rules.