It is exactly for anti-piracy system against TTS(text to speech) that has caused this.
https://drive.google.com/file/d/15UVslKfyX_DJRU06rwp7zikX5mIpqfHp/view?usp=sharing
This is how it looks it looks to TTS or google translate:
https://drive.google.com/file/d/1zG8NI3mLIUr65oo1apIfaCQjmLKyS03p/view?usp=sharing
so in an attempt to stop users from using TTS they not only bricked translation from being used but also encouraged users to literally copy the content of chapters, just so that users can read it.
I can understand the need for copyright protection but there is a point where the return on implementation will actually be detrimental to a website instead of beneficial.