I use NewPipe and what has helped me the most is not having to deal w/ the recommendation algorithm.
I reset my subscriptions to only be the most relevant feeds from YouTube and then I only check the subscription page. I've consciously curated the feed to be more productive and I'm much less likely to get distracted when watching videos
I think the article appears biased because searxng appears to offer the same functionality as Kagi, in spite of being free, yet Kagi is shown to be the best in class for some reason? Also it doesn't touch on the critique that kagi having a login potentially aggregates all of your searches into one account that is stored by one company.