It seems they offer an .iso download link now alongside the one for the .msi
The kickstart ROMs are still encrypted on the ISO and AF stores unencrypted versions on disk after you run it but if you're on a Mac/Linux you can use romtool to decrypt them
Where did Cloanto ever refer to this as "encryption"? It is a simple XOR, and it is open source. They always said they were "encoded" because Amiga International or Gateway asked them to. ROM encoding has been supported by UAE since 1997.
(Interesting takeover attempt by the usual "anti Cloanto" trolls.)
That was some time ago when I got it, so maybe it's different now