Last night I failed to get the photos off my late father's old iPhone while it was plugged into his old Windows laptop. Nothing was showing up in a file manager, iTunes was unhelpful, couldn't figure it out. Today I tried plugging it into my laptop running Linux and despite a "might be unsupported" message on the phone, everything just worked and I could use Dolphin to copy the photos off no problem.
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This is with Pop!_OS on a System76 laptop, but using KDE.
Nearly everything had been backed up onto the laptop already, but he took a few selfies in the hospital that otherwise would have been lost.