Most social media sites have removed dislikes in the last couple of years for a few reasons.
Found this list of reasons why on another website
1. Preventing Negativity and Harassment
2. Mental Health Concerns
3. Focus on Constructive Feedback
4. Engagement Metrics
5. Alternative Features
6. Algorithmic Impact
7. Brand Image and Responsibility
You can see more info about each on the website itself.
https://www.renewconnect.com/2025/02/why-dislike-button-is-removed-in-all.html?m=1