I think the lockdown has spawned some eccentric hair decisions. But if it gives him a buzz! He's clearly not worried what anyone thinks. Apparently he feels liberated. This is a man that had to be clean cut for a long time, he's clearly enjoying doing exactly the opposite, good for him.
He's probably not been able to go the barbers during lockdown just like thousands of others. Looks alright to me. If he had been appearing looking all suave and dapper then he would have been accused of breaking the rules.