This very case itself, of the accelerator pedal coming loose and jamming, was in fact a mechanical problem.
Other comments above have more examples of stuck accelerator wires and more.
Mechanics wear and tear and allow for human override and human error, software introduces complexity. Both have their own set of issues, neither are perfect, one can’t say either of them is inherently more reliable.
This very case itself, of the accelerator pedal coming loose and jamming, was in fact a mechanical problem.
Other comments above have more examples of stuck accelerator wires and more.
Mechanics wear and tear and allow for human override and human error, software introduces complexity. Both have their own set of issues, neither are perfect, one can’t say either of them is inherently more reliable.