When you think you have to hide the real name of your product to make it " acceptable" to your customers , you are on the wrong side the battle.
And by doing this you take the risk that people that will care about not flying in the Max will be confused and reject the whole 737 whatever its type and avoid your company altogether.
Time will tell of course if next year this issue will still makes the headlines and if, like before , the price of the ticket rather than the aircraft type will be the deciding factor..