I don't know what the average use on the site is, but I have never once used a supercharger for a long trip. In the last 10 years, the furthest I have driven in a day is 150 miles.
If you make a lot of long trips I would say superchargers are a big benefit, but the average UK driver doesn't make many long trips, so they might be open to different options.
I am waiting to see how the Mercedes EQS compares to the X/S. Even better might be an EQS SUV but that is going to be well into next year. The higher facelift prices are going to let you cross shop some interesting cars. For me the Audi GT looks very nice, but would not have enough space. The Taycan Cross is better with a hatch, but only has 4 seats. The Model X reigns supreme as a 7 seat electric car at the moment. Particularly as the X5 and Q7 hybrids only have 5 seats and the GLS/X7 aren't available as PHEVs. The XC90 feels like a much cheaper car and I didn't like it when I test drove it.
I will also wait with interest to see reviews of the facelift S/X. I am quite nervous about the lack of column stalks. It seems like a cost saving effort too far. Will be particularly painful if they have still not fixed the autowipers! It reminds me a bit of when the X came out. I was all ready to get one until they came out with the non folding middle row seats. A 5 metre car with a short boot was not for me. I was straight in when they sorted that issue out.