TL;DR: If users say that your question is unclear, please consider the possibility that this is because it is actually unclear – and not because of censorship.
There were several problems with your question as it was closed:
It was not understandable due to using an acronym (HIP) that is not in active use. In the ten thousands of questions and answers on this site, nobody ever used this acronym. The first results by Internet search engines are from some exotic company. (This issue is now fixed.)
It asks several questions at once, which is something not suited for our question-and-answer format. Please take the tour to learn more about how this site works. A specific problem that already arose from this is that the existing answers addressed different aspects of the question and thus are not comparable.
You tell us very little about want you already know, why you want to know what you are asking for, or why you are skeptical about certain things. This is not a forum where you just throw a topic into the ring and everybody writes an essay about it.
Some of the questions you were asking were already addressed before or are very broad themselves and we have several questions around that topic.
Note that the primary purpose of putting a question on hold is to prevent further answers while giving you the opportunity to fix the issues with the question. It does not result in deletion and unless users vote to delete your question, it will not be automatically deleted. If you edit your question, it will automatically be sent to a review queue, where users can decide whether the issues are fixed and it can now be reopened.
Finally note that the right to put questions on hold is a privilege in this community and it takes five users to agree on this, so it’s not that easy to abuse this function for censorship. Also note that the privilege of closing requires much more reputation than the privilege of downvoting, and so far nobody downvoted any of the answers that you presume they disliked.