I get that 'cssinjs' is now new and trendy but how can people legitimately pretend that the act of transcribing your css changes to their js format is anything

I get that 'cssinjs' is now new and trendy but how can people legitimately pretend that the act of transcribing your css changes to their js format is anything but developer/designer hostile? i can't be alone in mocking something up, then switching to browser to fine tune the css, then taking that back in to codebase. Somebody in work also had the idea of storing every components styling in JSON, then getting the browser to render that as styling...so now you need to understand a JSON->CSS engine just to troubleshoot most styling issues? When will it end. Do we need to rip out the DOM, HTML, JS & CSS and start over because we're creating more elaborate Rude Goldberg machines every couple of months.