The id.Polo starts at 22k GBP. The ordinary, petrol-driven Polo also starts at 22k. You can see how massive increases in the price of petrol and diesel might influence purchasing behaviour there...

Minor point: The id.Polo isn't released in the UK yet and prices are not confirmed. VW are not shy about price rises either I believe, so I wouldn't imagine the £21.7k figure in the media lasting more than a year if that price-point does happen.

Also, my god, £22k for a petrol base Polo! That's about £4k above inflation-adjusted prices from ~15 years ago