downvotes/upvotes affect the GLOBAL algorithm, not just your own. tweaking an algorithm for your own benefit is not the same thing. the nature of the algorithm on hive is not the same as the web2.0 sites in that there is generally less management and more purity of the trending list than on FB et., which use AI to heavily manage what you see. This is a good thing about Hive.
I do talk about shadowbanning on Youtube and Facebook etc. - I've spoken about it publicly for 15 years. I have video of Facebook deleting my comments in realtime and of Youtube not showing my comments to others (proven by access through Tor).
It is the shadowbanning on the controlled, anti-human web2.0 sites that is most of the reason why I am here and also whole heartedly support the massive court case that is ongoing against them at present. I have covered all of this extensively on Hive previously.