There's currently an issue in Godot 4 where web exports on macOS just cause the browser to hang. Their advice seems to be use Godot 3 or wait until it gets fix

There's currently an issue in Godot 4 where web exports on macOS just cause the browser to hang. Their advice seems to be use Godot 3 or wait until it gets fixed in the browsers. See https://github.com/godotengine/godot/issues/70691 https://github.com/godotengine/godot/issues/70691 for details.