>not because you disagree with technical decisions, but because you don't like the community management.

Isn't this description every fork ever?

Popular reasons are a disagreement about a license change, or unreasonable barriers on getting things done.

When the community manager (first assumed rogue, but later found to be aligned with Godot's founder) threw a fit and made it clear that anybody who doesn't toil very narrow ideological and political lines is not welcome in the project, there's not much left to do but fork.

The top developer is the one who committed five PRs that changed Godot to Redot, but they had fewer than ten PRs the last time I checked.