According to Wikipedia "As of April 2024, Kagi listed that its sources for search results were derived from Google, Brave Search, Mojeek and Yandex" so I suppose Google won't be available there as a source anymore? And perhaps all others in the future if they choose the same path.
I noticed that ChatGPT started to add the utm_source parameters for all links it recommends. For example, for GitHub links. Not sure if this critical or not but it could affect users for sure if URLs with any query parameters are blocked.
I've read that there were very rare conditions to launch Voyagers which gave them tremendous advantage with gravitational maneuvers. It happens very rarely, I don't remember the exact periods but maybe it happens once per hundreds of years.