Correct, I use Kast on the desktop, works nicely

If you’ve got a nextcloud somewhere, you already have everything you need running. Install required extension and login in antenna pod. Works nicely, can recommend it.

Hopefully the court was clever enought to specify that the side loading must not be more difficult than installing via the store. Apple will for sure make it as complicated and user hostile as possible so they fulfill the ruling without having any practical impact.

Finally some good news

Learned something new. Thank you!