Yes I have known that from the start. Any script that makes use of Blender’s API must be licensed under the GPL as I have done here. GPL allows me to charge a fee as I am doing so here. The income helps support me and this project.
You can start distributing it however you like as the GPL allows. Even if you fork the project my copyright notices can not be removed. The script will remain something I created and am rather proud of.
Lastly I would like to point out that from all the people who purchased this script. Nobody has done this simply to deny me some supporting income. If you wish to fork the project I ask you add some significant value. Ofcourse nothing stopping you from just distributing it for nothing.