Holdovers from when "don't be evil" was still a thing.

Both Android and Chromium are rapidly deteriorating in regards to FOSS. Yes, they are technically FOSS, but in the stranglehold of Google who keep carving away more and more freedoms.

Just consider Google Play Integrity and Manifest v3 (in regards to e.g. Adblocking) as two obvious examples.

If Google could, they'd instantly close the Android sources and remove the ability to adblock on Chromium.