What happens if a soft fork (such as CTV) were activated by 50% of the hash rate, but rejected by the rest?

nostr:npub1emdtsxly9m68m00x206t574jttp65vk0c2m89ms038q047yz7ylqcac9aw explains how this would play out, ultimately resulting in a chain split. [BR096]

https://blossom.primal.net/5d8a00f6313d4f081bc27351ca27c58f77f380ac2530b26d794ee58487362892.mp4