OP’s “evidence” is that Kagi internally uses Sentry.io (a FOSS crash report aggregation service for developers) to report crash logs, which they then use to assert that Kagi is aggregating personal data and sending that data to Sentry. The “proof” is that they used an Android tool that reports whether an APK contains specific Java classes whose fully qualified names match a “tracker” name filter (which, coincidentally, cherry-picks Sentry.io as a tracker), runs it on some completely irrelevant Android APK, and then concludes that because these classes are showing up with their cherry-picked filter, Sentry.io is a tracker, ergo Kagi is tracking personal data. Q.E.D.
In short, it’s complete nonsense. I did a thorough debunking of their methodology in a previous comment of mine. You can safely ignore anything they have to say.