Indeed, the article is about the promotion of their site.  They are encouraging people thru the use of the "100x leverage example" and invite them to register in their site.  Seems marketing at its work on that article.  

Setting aside the promotion stuff, I do agree that we should take advantage of this pull-back, but the question is, how low will BTC drop in this crash, even though it has recover some of its value but I guess this is not the bottom yet.  Somehow I got a strange feeling that some group  intentionally creates this drop to nullify the Bakkt catalyst in pushing the price up.  Probably they had not collected enough and wanted to get more at cheaper price by spreading possible disappointment and thinks that nullifying Bakkt effect is the best time.