Right now Coinbase is live and running.I don't think that they've done this on purpose.
Perhaps there were too many orders on the exchange that caused the platform to crash,I'm not an expert.
Companies like Coinbase usually have more benefits from a bull situation on the crypto markets-more newbies buying Bitcoins,more revenue from fees.They aren't the biggest crypto exchange in the world,so a possible outage can't influence the Bitcoin price.