There is nothing about a downvote that affects freedom of speech. Downvotes don’t remove content or censor it, they simply affect the amount of the inflation pool allocated to a post. So yeah if you think those posts are over rewarded, why not downvote them? It’s a valid reason imo.
This is what I mean about normalizing downvotes and seeing them for what they were intended.. and not how they have been used in the past.