A very good friend, who is not a brain surgeon, but designs and plans brain surgeries for clinical trials with the very brain surgeons doing the surgeries. So yes they do think it through and even do entire dry runs through every step.
Seriously, the amount flatpak misinformation that people hold onto is absolutely wild. Ex: I have had to show people it does differential updates because they don't bother to read the output.
Flatpaks are easily the best gui desktop app experience for users we have today.
This mirrors my experience as well of multiple instances over my life of repressing childhood trauma and some event or conversation suddenly bringing it back to the surface.