Private offers are usually considered the same thing as a rebate. If they do something different and it is a form of price protection where they reduce the dealers cost for the vehicles....then it may not be taxible.Pretty much why in autospeak it is specifically labeled a private offer and not a rebate.
Although the details are still unrevealed, especially if the dollars concerned will track exactly with what was available across the board with '22 models, think of the private offer for '22s kicked over to '23s as an individualized extension of price protection, whether some or all in gross reduction, and not a rebate program.