I just switched to Kagi because I liked the idea of a paid search engine who's aim was to remove the internet's clutter, not use any profile besides the one I create to show me results, and where I could weight certain sites that produce good content.
Reading the blog post the issues allegedly are:
Privacy is not guaranteed, like with a 3rd party audit
AI usage is growing not shrinking
The business seems to be poorly run and could have a short lifespan