600 miles is equal to about 10 hours of driving (very roughly). There are very few people who would do that trip without stopping at least a few times (bathroom, food, stretch, etc...) and if charging infrastructure is common enough (which it will be) than a good chunk of those 60 minutes can be done in concert with those stops. And compared to ICE vehicles, most would need about 2 re-fueling stops to make that trip[1]. So an aggressive ICE trip would still result in about 10-20 minutes of re-fueling time.

Another thing to consider, it is much more likely that we will see 400mi range electrics sooner and/or easier than we could roll out a large network of battery swap stations. I think the concept of battery swap is solid. Most batteries have BMS systems that prevent over/under charging and any physical damage can be detected. Plus the battery would likely be owned by a third party, so it would not be a big deal if you got stuck with a bad battery, you would just swap it out for another one. The main issue is logistics. Much harder to build a network of battery swap stations then it is to put some fast chargers in parking lots. And if we can get the range up to 400 miles, then a 600 mile trip could be done with 20-30 minutes of super charging.

[1] Assuming a ~300 mile ICE range, you need to fill up at the start, at the middle, and at the end (although one could wait till the next morning, but I think it should still count). Whereas electric, you start full (because you plugged in overnight prior to departure), and you end full (assuming you can plug in overnight at your destination). These are rough assumptions, but I think 2 fuel stops is a good approximation, but many would need 3 (including my own ICE car, which gets ~250 miles per tank).