If they have a great meta-search algorithm, users would be able to search without an account and see how great the results are. Then, when a user wants to personalize ranking and block sites, they can create an account.
I always assumed that they make you create an account to track search usage and cut you off once you hit the free tier limit.
Nintendo is estimating that about 12.5 million Switches will be sold in 2024. Previously, Nintendo predicted that the Switch would sell 13.5 million for the year. That means that the demand for the Switch is dropping off a bit faster than they expected but it is still selling.