There is an API end point to get upvoted posts. I don’t know about third party clients, but you can get it with curl
:
curl -H "Content-Type: application/json" -H 'Authorization: Bearer <Auth token here>' \
-X GET 'https://ukfli.uk/api/v3/post/list?type_=All&sort=New&liked_only=true' | jq
Everything is biased. Even saying something as simple as “grass is green” is biased, it has the bias of normal colour perception. I’m colour blind and don’t see grass as green.