It's not harsh. He sold cars claiming they can do FSD in the near future. He claimed he will have a million robotaxis in 2020. He claimed Teslas will pay for themselves in a year's time working as taxis for you (a bold faced lie even if FSD were here today).

Windows Vista and software in general are not even remotely comparable: they are not sold today with the promise of features tomorrow - they are generally sold when they're ready. Even pre-order games are usually refunded if they incur too huge delays or ship with significantly altered features (see Cyberpunk 2020).