It’s not impossible to happen that fast. A SAFE takes almost no lawyer time to prepare, and sometimes investors think there’s good reason to move that fast. But the fact that it does happen sometimes doesn’t mean that’s “normal” in any way. Even great people with really solid ideas usually take weeks to really put together and close a deal like that.
a “3 day raise” can mean many things, imagine something like this: 2-3 strategic angel investors already in place; prior to “starting fundraising” is a 1 month period of pitch discovery during which your angels are introducing you to investors but you are “not fundraising yet”; during this period investors start asking to invest but you are “not fundraising yet”; once you hit like $500k in interest, you email all the investors you’re already talking to and say “i’m fundraising now and already have $500k in interest for a 1.5M round” and one seed fund takes the remaining $1M and you’re done (the three days is for diligence). or 4 famous angels follow with $250k checks and you’re done. it’s an orchestrated process