Yuzi provided means to grab keys and firmware from a Switch console, which seems to be a big red flag and a reason why Nintendo went after them. Sudachi also has guides and download links for decryption keys and Switch firmware. From what I can see ryujinx only provides some guides on how to get the keys from a Switch but no apparent download links or "shortcuts"
Besides, we should not be pointing fingers at emulator devs. Companies are not your friend, we're just a means to profit for them.