Hi chrmn27,
I think the one who put a red tag on you is pertaining to this post. I'm fortunate I haven't receive a negative rating yet but sometimes I experience my post being deleted as it does not qualify to be a quality post or may have been irrelevant to the board which I have posted it.
You can try to read the topic below.
https://bitcointalksearch.org/topic/m.16958010
I can't really answer what is relevant or what is not a relevant post but I think the content should be able to express your opinion with a supporting statement as to why it is your position.
Does the Price of Bitcoin Matter?
Of course Bitcoin price Matter! This is especially true when you are into trading Bitcoins since the price at the time you acquire your Bitcoin directly affect your profit in the future. Lets take for example last December 2017, if you were able to acquire Bitcoin when the price is at $10,000 then sold it when the price hit around $19,000-$20,000, this will give you the optimum profit in trading. However if you acquired your bitcoin in December when the price is at $16,000 and you hold it until January 2018, when the price of Bitcoin dipped back to $10,000 you can say that you have experienced a loss. Thus, we can say that the price of Bitcoin is relevant and it matters particularly in Trading Bitcoin.
The example above is one which try to expound your original thought or Idea. You can actually include trading of Altcoins in this to further provide impact of Bitcoin price in trading.
I tried checking on the profile of the one who gave you a negative trust and he has this on his profile.
"IF YOU HAVE RED TRUST: Improve your post quality within a week. Don't post on massive threads or threads that have no valuable discussion. This includes (but is not limited to) general threads such as "bitcoin is $x" or "gold or bitcoin?" etc. If you can do that then the tag will be removed. Generally, if it takes a minute per post (finding a thread and then posting) then you're shitposting."
He/she is already a Legendary rank and might be one who tries to help regulate this forum.
Good luck to us and More power.