False positive for react/display-name on function value assignment to identifier starting with _

[apbarrero]

Both this codes are wrongly identified as Components:

obj._property = (a) => {
  if (a == null) return null;
  return f(a);
};

_variable = (a) => {
  if (a == null) return null;
  return f(a);
};

Apparently because words starting with _ are claimed as starting with a capital letter.