Really? SRAM claim a 60 hour life per charge for the AXS battery so even at half that time it won't will an issue and carrying a spare battery at approx £35 and 24g wouldn't be an problem.The limiting range factor there will be the battery on the electric gears , the sram is useless
If set up correctly i.e. RTFM the AXS gives faultless fast smooth changes. Obviously it's an expensive solution but that's no reason to dismiss it if people are happy to spend the money, Tesla sell plenty of cars despite the Ford Fiesta existing.