From January 26th, 2019 to September 9th, 2020, 100% user give 1-star rating. for IMDb & Rotten Tomatoes @ Prime Instant Video chrome extension.
I did not hate it, the extension just does not work.
Doesn't work. No Rotten Tomatoes score is shown, and now Prime already shows IMDB ratings by default anyway. A broken extension that would be pointless even if it did work. Avoid.