Well, most of all this "expert" thoughts works well after the prediction and especially in the bull market, where few people can mistake ;-)
In this downward trend, is hard to "predict". That's why i also gather information and love to share it here (like the post above) to make others think and also give feedback with their own opinion.
There are a few that are speaking very nice what is happening and not predicting it just for having viewers. That's the good information that can help crypto noobs learn the good way.
Regarding investing, it is good to be a little cautious and invest in small steps. Depending on investors budget it is safe to have more entries that will cover the ups and downs.
And as investment, you must be prepared if it goes down... deep down. Chill and wait. Exit is the last step, especially that few people understand stop loss and are not prepared to understand it .
Last remark: If it will find the bottom here i still don't think that $8k is the mining cost. It is just a bottom that was reconfirmed and that the bulls are holding it strong.