Yes, we need this technology,
Yes, we need this technology, but not for the reasons you think. 65% in 25 minutes? You used an older, slower supercharger station. If your point is that we need newer technology, we already have newer, faster supercharger stations.
If you start a road trip after charging from home, a 25 minute stop at an older station is still enough for you to complete a 500 MI trip in a Model 3, which isn't the car with the longest range. For most people, that's plenty. They are going to stop for lunch, and stop for a rest stop anyway.
But they can already go to faster supercharger stations. A 10 minute stop at a faster station would have been enough to complete that 500 MI trip. And 65% for a new Tesla is as much as 100% was 5 years ago.
The technology is needed because we don't have the infrastructure for people who can't charge at home. Most people can charge at home, but there are people who live in apartments and condos who can't. Until they are charging stations at most supermarkets, malls, and places where people would park anyway, we will need faster charging.
Solid state batteries will also be much safer. And while EVs catch fire at a fraction of the rate of gasoline powered cars, and the fires are a lot less severe, a solid state battery can eliminate the problem almost completely.