Looking at AlternativeTo[0] I see these touted as some of the most popular FakeSpot alternatives:
1. ReviewMeta.com
2. TheReviewIndex — originally focused on Indian electronics reviews
3. Star Evaluator — seems like an interesting project but it's just reviews for companies instead of individual products.
4. Best Views Reviews — uses AI to summarize (Amazon?) reviews
None of them seem particularly well known or mature however besides ReviewMeta. Seems like there's definitely room for a newcomer in this space