A stance in the middle would apply to just these ADUs specifically, because they are somewhere in the middle between;
a) renting out a room in your house (where fair housing laws already don't apply) and,
b) renting out a fully distinct dwelling unit, where fair house laws definitely apply and serve an important function.
ADUs are always going to be a small percentage of the overall housing market, so lessening housing regulations around ADUs specifically is definitely not the same as abolishing fair housing laws entirely.
a) renting out a room in your house (where fair housing laws already don't apply) and,
b) renting out a fully distinct dwelling unit, where fair house laws definitely apply and serve an important function.
ADUs are always going to be a small percentage of the overall housing market, so lessening housing regulations around ADUs specifically is definitely not the same as abolishing fair housing laws entirely.