The point is that there is no evidence to suggest it will happen, so he appears to be restricting peoples freedoms and companies incomes on his opinion. Everything at the moment is suggesting that Omicron is milder, that less people are being hospitalised and less people are dying.
Another point that the people shouting for more restrictions don't mention is the difference between the number of people who have to go into hospital because of covid (Omicron) and the number of people who go in for other reasons and are then found to have it. Those people would perhaps have recovered without any need for hospitalisation but because they are in for something else they are used to inflate the apparent hospitalisation numbers caused by the virus. All very scientific.