If an entry (post or comment, moreso the former) is objectively appropriate (for.the Sub or thread) and you downvote it without replying verbally, then that speaks to shortcoming of you rather than the contributor.
I realize that discontentment with downvotes isn't a new theme on here, so here is the tldr of insight: intimidation from intellect. or laziness. or both. and/or groupthink bandwagon effect.
But, in case of many targeted at me, I have adduced, definitely envy/intimidation does play a role. Many of my submissions﹘ not to toot my own horn, honestly ﹘entail somewhat complex concepts. Perhaps a particular entry isn't articulated in the most straightforward fashion; this would warrant a reply asking for clarification , and maybe, iff it is bordering unintelligible or serioualy offensive, a downvote; but simply pressing the down-arrow for a post/comment because you superficially dislike it, and not bothering to actually respond (heck, even if consisting of a *.gif)? Lame on you the downvoter, not me the contributor (even if my contribution gets substantially downvoted in net).
And by the way: I amn't suggesting that necessarily should declare your downvote when responding; if in fact many folks did take the time to reply in good faith to a post that obectively (not to be confused with purely subjectively) falls short of Community standards (i.e. jure guidelines, not to be confused with riding a facto bandwagon) and they encompassed all thoae that downvoted it, then this issue would be mostly moot. But obviously many users do downvote objectively good-quality posts, without verbally responding to it. Shame on them