for me personally I like to be able to install software temporarily using nix-shell command it’s awesome. the installed program will be gone once you leave the nix-shell. It’s just awesome for me.
TBH I want a option to enable ads to support my instance since I can't donate money. There should be a way to opt in ads . There will be a lot of people who will be willing to enable it to support their instance.
No, It does not let you use multiple android devices with a single account. I will be logged out from my android device if I log into whatsapp in waydroid :(