I wear lifting shoes with a heel. Most lifters seem to now, even in powerlifting. I would say most lifters can achieve considerable leg development with a raised heel.
But kleinhound, I would consider the fact that the reason oly lifters and powerlifters use these shoes is because it makes the lift easier. So depending on goals, that's not necessarily optimal. I feel like your answer was a bit smug and lacked proper consideration. If one of the goals for of squatting for an individual is to further develop ankle and hip flexibility, weight lifting shoes are not necessarily a good thing. nor are they necessarily optimal for someone who competes in a sport where they can't wear these shoes. I can't see them being beneficial to a lot of athletes in sports outside strength sports. Even crossfitters need to be able to squat properly without them, because they can't always change shoes in their events.
Just some things to think about. For the OP's purposes I think you're right, they won't be detrimental, but in a broader sense, the answer is not so cut and dry.