Actually, your advice applies to ALL exchanges. One would have to be barking mad to leave any crypto on an exchange.
Actually, on a related note, I cant believe all the investors staking their ethereum with various exchanges and companies. For such a small return with huge risk I think its really stupid. But personally Im glad that they have all done it as its causing a supply shock in the lead up to Ether 2 being released. Now because of this and the fact they are are burning ether on a daily basis (london hard fork) I think there will be a HUGE run up in price this yr up to feb next yr. Wait for all the investors to have access to their ethereum (unlocked) and see a huge sell off.