Yes, Google automatically tracks all crashes/ANRs from PlayStore installs. No need for any library inside the app. Side-loading requires the dev's own stack or other libraries and services out there. It's not ideal.

Google's one is too centralizing. It would be great if the info was sent over Nostr, publicly. With some sort of approval by the signer (to make sure the error message doesnt expose any private info). Otherwise, most info in the crash report could be fully public.