This will spook a lot of people in the short term, but this will increase confidence in the crypto markets in the long run. If we want crypto markets to be sustainable, we need regulation.
I agree, we shouldn't think short-term theses days. All those measures are mostly good for the future of crypto currencies. Many potential users restrain themselves from using cryptos exactly because of the cases like with Coincheck, when $533 million worth of NEM were stolen. People have the right to feel protected from such incidents. The exchanges in question, Mr. Exchange and Tokyo GateWay, were ordered to improve their data security on March 8 by the Japanese Financial Services Agency and I guess failing to do so they've decided to shut down. That is the right decision imo.