So, do you guys think it is safe to keep coins at these exchanges for the sake of earning interest? Do these platforms offer any insurance?
Storing cryptos on any exchange is not an advisable because even the most reputed,secured exchanges even got hacked so there is no exchange is an exception to these hacks so its your choice whether you are looking for that interest rates or security of your funds.
AFAIK, there will be no insurance claim and no refund on the hacked funds unless the exchanges paying them from their profits.