it is one thing to tell people not to store their bitcoin on exchanges because of the risks but it is another thing to tell them to withdraw because price is crashing and being manipulated!!!

of course you need to always keep your bitcoins with you in a secure cold storage but when price is falling and IF you are a trader then you need to sell your bitcoin and start buying back at the bottoms when the manipulation ends. for example 3 or 4 days ago when the dumping began you should have sold the coins you had on exchanges and then started buying back now to have more bitcoins.

in the end as a trader you always leave something on exchanges unless you don't want to trade for a couple of days anymore.