If you don't mind spending around $10 USD, hacking an updated 3DS is simple if you get an ntrboot-compatible flashcart [1] and a small magnet. At the moment, Ace3DS X flashcarts are available on AliExpress and work well.
If the supply of compatible flashcarts ever dries up, it will definitely get harder, though hopefully there will be more software exploits discovered by then.
If the supply of compatible flashcarts ever dries up, it will definitely get harder, though hopefully there will be more software exploits discovered by then.
[1]: https://3ds.hacks.guide/ntrboot