I've been using it since ~2022 and can't go back. I think it definitely has better results: whenever I'm using a new machine or a different computer without it, I notice the low quality of results immediately; and quickly side-quest to find a way to log in to Kagi.
The freedom of clicking on the first few search results without thinking whether or not those are ads and/or scams is priceless; a calm and premium experience.