Why are the feet significantly different sizes

Is it illegal to film police where you are? If it’s not illegal then just use your camera app. You can probably configure it so that you can open the camera app from the lockscreen without a password, but then of course make sure you can’t e.g. access anything from your gallery from the camera app. I have always just used my camera app to film police. There also used to be “secret recording” apps for Android at least, but I believe modern Android security doesn’t allow for that kind of app behaviour anymore.

No? It’s the same amount of “strain” as doing two full OS installs of the different distros.

I never use flatpaks and am doing just fine. I don’t want my packages to be installed from a bunch of different places; I want it all managed by one package manager, which for me is my distro package manager. I’ve never noticed a problem arising out of not using flatpaks; everything I want is either already packaged for me, or I can make a package myself.