So this thread title Don't feed your bitcoin to the whale inspired me to make this post since the Op did not emphasize on what the his thread title (don't feed your Bitcoin to the whalers) denote at my end, I decided to break it better based on my own view.
Regulation, market sentiments and price theories in the individual units of microeconomic has drastically caused the market dump which most investors are just like they don't know their stance if to sell or keep holding would do them better.
I don't want to talk about investors on emotional control who are resisting the volatile market system that is being manipulated prompting the weaked and minnow Investors to sell their bitcoin while the patient hodlers stays active to take the benefits when the market turns around on price increase.

Awareness: the whalers are always ready to buy your bitcoin anytime and hodls it because the rich always want to stay limited in a cycle of numbers not to see everyone grow rich or equivalent to them so, these whalers sometimes intentionally causes market panic with their large holdings strategically just so you can place your bitcoin on sell and they are always ready to buy and get richer because it is of no doubt that after dump on potential coin like bitcoin comes the pump since bitcoin is a hedge of value not like others that goes dump and dust.
So be sure that those who understands the market well with confidence that it is a store of values are the ones buying your bitcoin assets when you are in hurry to sell due to market price fall.
While your bitcoin is ought to be your greeners ticket in the future and you think selling it at ugly market time will make you a better different after getting your bank account staked of fiats, be reminded that microeconomic news being part of the negative effect on the bitcoin market will be highily effective on your fiat because when their is an economy inflation, there is always traditional currencies crisis where it faces depreciation on value in the international market.

So, don't sell to them instead, hold patiently and in matter of time depending on your goals and assets values, you could imitate them (whalers) or could even be one in the future.