However; when compared to other operating systems - like Windows - these space requirements are negligible: a full installation of Window 11 takes north of 30GB, so even with five years of accumulated flatpak runtimes, this is still less than a third of a Windows installation.
Even budget computers can satisfy this. And once the runtimes are installed, your mostly good - there are only so many runtimes[0].
With regards to raspberry pi; yes, that's not what Flatpaks are aimed at, at least not now.
However; when compared to other operating systems - like Windows - these space requirements are negligible: a full installation of Window 11 takes north of 30GB, so even with five years of accumulated flatpak runtimes, this is still less than a third of a Windows installation.
Even budget computers can satisfy this. And once the runtimes are installed, your mostly good - there are only so many runtimes[0].
With regards to raspberry pi; yes, that's not what Flatpaks are aimed at, at least not now.
[0] https://docs.flatpak.org/en/latest/available-runtimes.html