While I dont think you will ever be able to completely stop trivial comments/posts for upvotes. I do think by the nature of the platform they will eventually just go away because they are not actually interacting or contributing anything to the site and therefore not getting anything in return.

Atleast thats how it seems from my short time here and limited understanding of it all. But a friendly reminder to not feed the trolls now and then is always a good idea. :-)