It isn't possible for an incel to be MGTOW.
The essence of being MGTOW lies in the act of CHOOSING your own lane. If you can't have sex because it isn't an option in your life, then your lane has been chosen for you.
That isn't MGTOW.
To be MGTOW, you first must have the option of being in a relationship available to you and THEN chose to be single.
You have to actually be a man.