Hmm, so on top of living under a rock you also like to spread misinformation.
For starters, check Debian FAQ and read up on why Sid (Unstable) is preferred over Testing. Here’s a link: https://www.debian.org/doc/manuals/debian-faq/. Would you prefer a PDF version?
Next, I recommend reading the Flatpak FAQ: https://flatpak.org/faq/
HHAHAHAHHAHA
I’m on Debian at the moment.
Which DE do you use? Sadly, on KDE Debian is quite bloated but there’s a trick, I deselected KDE when installing Debian.
Naturally, I booted into a blackscreen but after entering my credentials I ran the following command: sudo apt install kde-plasma-desktop
I rebooted into a beautiful and minimal Plasma desktop, it doesn’t even have a calculator but it still comes with a few questionable applications installed. From there I just set up flathub and I’m all flatpak.
I used this page, check the page for your favorite DE/WM: https://wiki.debian.org/KDE
Sure, go ahead, use licenses that let Apple steal everything later.