> IMO they should not only be opt-in, but should actually be required to publicly list the parameters and weights they’re using and allow users to tune those weights.
I wonder how many people here know that many of the popular apps have rolled out finer controls for recommendation algorithms so you can do this. On Instagram you can go in and see the topics your recommendation algorithm picked up and modify them manually if you like.
I think the goalposts will just continue to move, though.