Swords & Wizardry is more than a re-statement of the original rules that gave rise to 5e. It is fast-playing, easy to start, and easy to learn by anyone.
Swords and Wizardry is a snapshot of the rules as they existed in 1978 right before “first edition” was released. The fifth edition game currently played, watched and beloved by millions is great fun, but the structure of the rules has changed over the course of editions, and there’s a unique feel to the earlier versions of the game which you may not have encountered before.