Anyone has a right (within Amazon's TOS) to post a discussion topic in the forum. HOWEVER - people also have the right (within the TOS) to tell you what they think of your post. There is no guarantee people are going to agree with you, and there is no guarantee all responses will be civil. That's Life. However, there are ways to express yourself that can minimize scorn - if that matters to you.
(1) Make your question/point clearly evident in the title of your post. There are several different models of Kindle (best to spell 'Kindle' correctly, for starters). If you have a question/concern about the Fire, *use the word Fire in the Topic line* - or whatever Kindle you have. And then, don't just type "Kindle", or some unintelligible gobbledygook in the topic line. It annoys people, and makes you look less than intelligent.
(2) Posts which essentially consist of "I didn't know that ....", "why doesn't ....", "Amazon should....", Kindle should...", "We need....", etc. are generally not received well. It is taken as a given by most people on the forum that people should read the product page for a device *before they order it*, keeping the "didn't know" posts to a minimum. If you wish your Kindle did something/had something that it doesn't have, then you shouldn't have bought it. and people are going to respond negatively to your "sudden" discovery of things you wish it could do but it doesn't. Posts with lots of exclamation points for emphasis do nothing but annoy people and/or encourage them to laugh at you.
(3) You might want to at least peruse the first page of Discussion Topics to see if it's already being discussed. And you might want to know what you're talking about, i.e. back it up with facts, rather than just your opinion (which is just your opinion, not the Word of the Supreme Being) on a matter.
(4) Whines and self-entitled demands to Amazon will *guarantee* that you will not appreciate the responses you will get - unless of course you're trolling and that's what you want. Those are sussed out pretty quickly, though. Any post which demonstrates that the poster thinks they are the center of the universe is not going to go down well.
(5) Questions that 5 mins. searching time on your own would answer will get you snark. They demonstrate you are too lazy/feel too entitled to try looking for the answer yourself.
Anyone can post anything they like - but be prepared for the consequences of your post, from the Topic to the wording of the post. Just sayin'.......