Here's a word about why. Your comments were rightly downvoted because they didn't contain any information. They lashed out at something you happen to dislike, using phrases like "immature children" that merely vent personal displeasure and offer nothing of value to the community. If HN threads are a swimming pool, that is peeing in it.
HN has a long history of users repeating the same complaints about downvoting. These get downvoted because they lower the signal/noise-ratio. They are such a cliché that the guidelines have for many years contained a rule asking you specifically not to post that kind of comment.
If, instead of familiarizing yourself with any of this and taking your lumps like the rest of us do, you decide to post such things anyway, the only surprise is that they aren't downvoted more.
Resist commenting about being downvoted. It never does any good, and it makes boring reading.
Of course, any comment about downvotes is also, understandably, frowned upon and discouraged so there doesn't seem to be much recourse.
We could avoid political or ideological topics altogether but that's very hard considering any conversation can lead to them.
To get back on track, I see it as an extremely hard problem to solve since downvoting due to disagreement is a very big temptation and, once you start, you might not even notice you're doing it anymore.