Above warnings are on warning level, because in some cases they
are real issues that explain why something user tried won't
work. Unfortunately on boot they're rarely useful.
BUT you can now remove *all* this output with "--log-level error"
option.
Any reason that this isn't the default? In my view, it makes more sense for
the default to be (practically) no messages, and then, if there's a problem,
you enable them. Or disable them during boot only (that might be a bit tricky,
although surely there's some heuristic that will enable Hatari to decide that
the boot is over).