@lorendias At some point, the SoC i.MX8M is the limiting factor, with some quick internet research I could not find what the limits of the MIPI CSI-2 interface are, but I did not find it.
While the Librem5 is designed to be modular regarding WiFi and Cellular, I don't think this applies to the camera; and overall, software support for this kind of camera in the Linux ecosystem is currently limiting the usefulness of the camera most.