All you need to know is that RAM is all about being extremely fast.

Swap is disk space set aside to be used as virtual Ram (part of your disk become RAM ) for when you have no more real ram. It's useless on modern computers because RAMs are at worst of worst 100 times faster than the fastest SSD. If you have no ram it's just best to crash the OS than making it slow down to a crawl or freeze.

This person use their Google drive as swap which make it even far more useless because even the slowest ssd is probably faster than the best commercial internet connection even with a perfect latency.

In short, it's extremely cursed.