As an EV driver I'll happily tell him he's wrong about the supercharger network being a game changer. Tesla are just 12.3% of the high power chargers in the UK. It's not an insignificant number, but if I can only use the other 87.7% of chargers I'll survive.

https://www.zap-map.com/ev-stats/how-many-charging-points

It's a very different situation in the US. There the supercharger network has been the only one that enabled long distance travel, although that's starting to change.