If you want to take traditional markets as an example of what your saying, then it would be wrong. This is due to the fact that on traditional markets, there is definitely not enough "blood on the streets" yet, which - to recognize the right timing of - is also part of being a good speculative market investor.
An example - if you look at how far the dow went in 2008, none of us thought it could reach those lows, halfing itself from 14k to 7k, and people were buying into it at 12k,10k,8k, seeing the bloodbath. This went on for almost a year and a half of downfall from October 2007-June 2009, so where would you have guessed the reversal? So yes, buy when theres blood in the streets (but HOLD FOR YEARS) waiting it out. Theres way more time to think about any reversals towards a bullish market anytime soon, at least in traditional markets, which makes it a bit early to echo historical traditional investor quotes. This could be just a drop of blood in what will be a full bucket.
The great thing about crypto is that it doesnt work like traditional markets, which is why I would stay away from using traditional market processes as an example or investors such as Rothschild and Rockefeller, which in anycase controlled enourmous market share in their time (Buffet as well today) and thus had advantage over very unique insider market intelligence, which makes it easier... Along with their subordinate employees/investors making more then a million a year, scrambling through wallstreet for "special information" at every old job post of theirs in every investment bank previous to big investor their working for.
Anyhow, this is not meant to be disrespectful of your post in anyway, and I thank you for writing it, as it truly makes me think of todays economic whirlwind, and how it'll be going.