I also strongly believe that such decisions shouldn't be rushed, and taken out of spite and anger.
Unity's install fee will likely be withdrawn given the backlash, but the writing's on the wall and the trust is broken. Use the time you have available to consider options fairly.
I love that you're eyeing Godot, but take your time to weigh the pros and cons.
It's a great engine, but no software is perfect and we don't want you to come to it in panic, and end up frustrated that it might not be the drop-in replacement for what you had to leave behind.