Which is their own fault. They have more than a million dollars in bitcoin donations that haven't been touched in years (Its around 620k now since bitcoin is crashing). That could have easily funded 3 full-time developers for a decade to come.
Since when is $30K a full time developer's salary? Presumably anyone good enough to work full time on GIMP could make at least an order of magnitude more at Adobe etc.
Since countries other than US/some European countries existed. Godot developers get paid in the $30-40k range. I live in Lebanon, and it is normal for talented senior developers to be paid $15-25k a year.