I did prefer that honest line about bloated, buggy Javascript framework. Otherwise might as well ask an LLM to spit out a sanitized apology text for your change in provider. Just like ten thousand identical others copied from a playbook. Allow your eyes to comfortably glaze over with zero retention.
Have people already forgotten that the ReactJS port made github slow ? https://news.ycombinator.com/item?id=44799861
The revised, politically-correct, sanitized re-framing that you apparently insist on does not convey this very important point of information.
We have freedom of speech for a reason - blunt honesty conveys important information. Passive language does not.